Experiment 20: Analysis of Vinegar. Materials:

Size: px
Start display at page:

Download "Experiment 20: Analysis of Vinegar. Materials:"

Transcription

1 Experiment 20: Analysis of Vinegar Materials: graduated cylinder 6 M NaOH: Dilute Sodium Hydroxide 1000 ml Florence Flask & stopper KHC 8 H 4 O 4 : Potassium Hydrogen Phthalate (KHP) 125 ml Erlenmeyer Flasks (3) Phenolphthalein Indicator Buret Stand (or ring stand) Unknown Vinegar Solution ( % HC 2 H 3 O 2 ) Buret Clamp (or utility clamp) Funnel, small plastic (optional) 50 ml Buret 10 ml Pipet and Pipet Bulb 100 ml Beaker 150 ml Beaker Wash Bottle with Deionized Water Preparation of Standard Sodium Hydroxide Solution Procedure A. 1. Preparing the NaOH solution in Florence Flask Half fill a 1000 ml Florence Flask with ~500 ml of Distilled Water. Measure ~20 ml of 6 M NaOH into a graduated cylinder and pour into the flask. Stopper the flask and carefully swirl to mix solution.

2 Procedure A. 2. Conditioning a Buret Set up a buret. Use small funnel and half fill the buret with NaOH solution from the Florence flask. Allow some solution to flow out the tip; then, invert and drain the buret. Check that there are no air bubbles in the tip of the buret. Make sure there are no bubbles, like these, in the tip of the buret. This tip looks good: no bubbles! Also, make sure the buret does not leak when turned off.

3 Procedure A. 3. Carefully fill the buret; do not overfill the buret. You ll record an initial reading and a final reading, then take the difference; so, it does not matter if it is at zero, exactly; but, in this case, fill and adjust till the buret is exactly at 0.00 ml ml ml ml 0.00 ml

4 Procedure A. 4. Label three 125 ml Erlenmeyer flasks #1, #2, and #3. Accurately weigh out ~1 g of KHP into each flask. Add ~25 ml of DI water to each flask. Heat if necessary to dissolve the KHP crystals. Fold the weighing paper in half then open it to have a crease running across. Gently place weighing paper on the analytical balance Push the front bar down gently to tare, or zero the mass. Use a Scoopula to transfer about 1 gram onto the weighing paper. Carefully remove the paper and KHP. A crease in the paper made this easier

5

6 Procedure A. 5. Titration Buret Stand, Buret Clamp,Buret, and 250 ml Erlenmeyer Flask with sample, and 1 drop of phenolphthalein. Drain some NaOH through tip to clear bubbles. Position Erlenmeyer flask #1 under the buret. Record initial buret reading (± 0.05 ml) Add a drop of phenolphthalein indicator to the flask. titrate the KHP sample to a permanent pink endpoint Record the final buret reading (± 0.05 ml) Your instructor will explain what to watch for during the titration; like the pink color where the drops hit the solution, and the persistence of that color. Stop the titration when the solution just turns pink, and stays pink.

7 Procedure A. 6. Refill the buret and repeat, record for flask #2 Procedure A. 7. Refill the buret and repeat, record for flask #3. Procedure A. 8. Calculate the molarity of the NaOH solution for each trial; record the average molarity of NaOH in the Data table of Procedure B. NOTE: SAVE THE NaOH in the FLORENCE FLASK for PROCEDURE B. Procedure B. 1. Obtain ~50 ml of Vinegar solution in a dry 100 ml beaker. Record the unknown number in the Data Table. Procedure B. 2. Condition the pipet with unknown vinegar solution, and transfer a 10.0 ml sample into each 125 ml flask. Add ~25 ml of distilled water into each flask. It is not necessary to use dry flasks. Procedure B. 3. Fill the buret with NaOH solution; adjust meniscus to zero, record initial buret reading as 0.00 ml. Add a drop of phenolphthalein to flask #1. Titrate the vinegar sample to a pink endpoint. Record the final buret reading. Procedure B. 4. Refill the buret to 0.00 ml, add one drop of phenolphthalein to flask #2 and titrate the sample to a pink endpoint. Procedure B. 5. Refill, repeat for flask #3. NOTE: By adjusting the meniscus in the buret to 0.00 ml, the endpoints for flasks #1, #2, and #3 should be the same. Procedure B. 6. Calculate the molarity of acetic acid, HC 2 H 3 O 2 in the vinegar solution. Procedure B. 7. Convert the molarity of HC 2 H 3 O 2 (60.06 g/mol) to mass/mass percent concentration. Assume the density is 1.01 g/ml for the unknown vinegar solution. NOTE: When you re finished with this lab, please rinse the buret and all glassware with distilled water to remove traces of NaOH solution.

Chemistry 143 Experiment #11 Acid Base Titration Dr. Caddell. Titrating Acid

Chemistry 143 Experiment #11 Acid Base Titration Dr. Caddell. Titrating Acid Titrating Acid In this lab you will first determine the concentration of sodium hydroxide in a stock solution that you prepare. You will then use that stock sodium hydroxide solution to titrate a solution

More information

Chemistry 143 Acid Base Titration Dr. Caddell. Titrating Acid

Chemistry 143 Acid Base Titration Dr. Caddell. Titrating Acid Titrating Acid In this lab you will first determine the concentration of sodium hydroxide in a stock solution that you prepare. You will then use that stock sodium hydroxide solution to titrate a solution

More information

CHM111 Lab Titration of Vinegar Grading Rubric

CHM111 Lab Titration of Vinegar Grading Rubric Name Team Name CHM111 Lab Titration of Vinegar Grading Rubric Criteria Points possible Points earned Lab Performance Printed lab handout and rubric was brought to lab 3 Safety and proper waste disposal

More information

Experiment #7. Titration of Vinegar

Experiment #7. Titration of Vinegar Experiment #7. Titration of Vinegar Goals 1. To determine the mass percent of acetic acid in a solution via titration. 2. To master the technique of titration. Introduction Vinegar is a common household

More information

TRATION: ANALYSIS OF VINE

TRATION: ANALYSIS OF VINE Experiment 10 Name: 22 Ti TRATION: ANALYSIS OF VINE 31 Ga R In this experiment, you will learn the concept and technique of titration. You will determine the concentration of acetic acid in commercial

More information

NOTE: YOU WILL BE USING THIS SOLUTION IN BOTH, THIS EXPERIMENT AND EXP 12B. IF YOU WASTE THE SOLUTION YOU MAY RUN OUT BEFORE YOU HAVE FINISHED EXP 12B

NOTE: YOU WILL BE USING THIS SOLUTION IN BOTH, THIS EXPERIMENT AND EXP 12B. IF YOU WASTE THE SOLUTION YOU MAY RUN OUT BEFORE YOU HAVE FINISHED EXP 12B EXPERIMENT 12 A: STANDARDIZATION OF A SODIUM HYDROXIDE SOLUTION OBJECTIVE: Sodium hydroxide solution of about 0.2 M is prepared in order to be used in Exp 12B. The solution is then standardized, that is,

More information

In this laboratory exercise we will determine the percentage Acetic Acid (CH 3 CO 2 H) in Vinegar.

In this laboratory exercise we will determine the percentage Acetic Acid (CH 3 CO 2 H) in Vinegar. The titration of Acetic Acid in Vinegar In this laboratory exercise we will determine the percentage Acetic Acid (CH CO H) in Vinegar. We will do this by Titrating the Acetic Acid present with a Strong

More information

Experiment 20-Acid-Base Titration: Standardization of KOH and Determination of the Molarity and/or Percent Composition of an Acid Solution

Experiment 20-Acid-Base Titration: Standardization of KOH and Determination of the Molarity and/or Percent Composition of an Acid Solution Experiment 20-Acid-Base Titration: Standardization of KOH and Determination of the Molarity and/or Percent Composition of an Acid Solution In this experiment, you will determine the molarity and percent

More information

PreLAD: b. KHP is a monoprotic acid, what are the number of moles of ionizable H + in the approximately 0.25 g of KHP?

PreLAD: b. KHP is a monoprotic acid, what are the number of moles of ionizable H + in the approximately 0.25 g of KHP? LAD G.1 (pg! 1 of 6! ) What % of vinegar is really acetic acid? Name Per What part of the solution is really HC2H3O2 aka CH3COOH? What is the Ka of acetic acid? Introduction: The acid in vinegar is acetic

More information

Molarity of Acetic Acid in Vinegar A Titration Experiment

Molarity of Acetic Acid in Vinegar A Titration Experiment Molarity of Acetic Acid in Vinegar A Titration Experiment Introduction Vinegar is prepared commercially in two steps, both requiring microorganisms. The first step is the production of ethyl alcohol, C

More information

Acid-Base Titration. M M V a

Acid-Base Titration. M M V a Acid-Base Titration Pre-Lab Discussion In the chemistry laboratory, it is sometimes necessary to experimentally determine the concentration of an acid solution or a base solution. A procedure for making

More information

+ H 2 O Equation 1. + NaOH CO 2 Na

+ H 2 O Equation 1. + NaOH CO 2 Na Experiment # 5 VINEGAR: AN FDA INVESTIGATION Objective In this experiment, you will play the role of an FDA analytical chemist, You will verify whether a vinegar manufacturer's quality control lab remains

More information

Ascorbic Acid Titration of Vitamin C Tablets

Ascorbic Acid Titration of Vitamin C Tablets Ascorbic Acid Titration of Vitamin C Tablets Part A. Preparation of Vitamin C Tablet Solutions 1. Obtain two vitamin C tablets. Place a plastic weighing boat on the balance, and press zero to tare the

More information

EXPERIMENT A7: VINEGAR TITRATION. Learning Outcomes. Introduction. Upon completion of this lab, the student will be able to:

EXPERIMENT A7: VINEGAR TITRATION. Learning Outcomes. Introduction. Upon completion of this lab, the student will be able to: 1 Learning Outcomes EXPERIMENT A7: VINEGAR TITRATION Upon completion of this lab, the student will be able to: 1) Prepare a solution of primary standard 2) Determine the molar concentration of a solution

More information

Experiment 7: ACID-BASE TITRATION: STANDARDIZATION OF A SOLUTION

Experiment 7: ACID-BASE TITRATION: STANDARDIZATION OF A SOLUTION Experiment 7: ACID-BASE TITRATION: STANDARDIZATION OF A SOLUTION Purpose: Determine molarity of a solution of unknown concentration by performing acid-base titrations Performance Goals: Apply the concepts

More information

H 3 O + (aq) + P 2- (aq)

H 3 O + (aq) + P 2- (aq) PURPOSE: To standardize a solution of sodium hydroxide by titration with a primary standard, (KHC 8 H 4 O 4 ), potassium hydrogen phthalate (KHC 8 H 4 O 4 ) PRINCIPLES: Most shelf reagents, such as 0.10

More information

When dealing with solids that one can weigh on a balance, determining the number of moles in a particular sample is simply:

When dealing with solids that one can weigh on a balance, determining the number of moles in a particular sample is simply: Experiment 2 Stoichiometry Solids and Solutions Determining the Molarity of a Solution Lab Owl Announcement: Upon completion of this lab, log onto OWL. A Lab Owl section should now appear in your courses

More information

CHEM 30A EXPERIMENT 8 & 9: ACID- BASE TITRATION. Learning Outcomes. Introduction. Upon completion of this lab, the student will be able to:

CHEM 30A EXPERIMENT 8 & 9: ACID- BASE TITRATION. Learning Outcomes. Introduction. Upon completion of this lab, the student will be able to: 1 Learning Outcomes CHEM 30A EXPERIMENT 8 & 9: ACID- BASE TITRATION Upon completion of this lab, the student will be able to: 1) Prepare a solution of primary standard 2) Determine the molar concentration

More information

2 burets (50 ml) Standard solution of NaOH (0.600 M) Phenolphthalein indicator

2 burets (50 ml) Standard solution of NaOH (0.600 M) Phenolphthalein indicator Name: \[-[L Percentage of Acetic Acid In Vinegar Lab 4-5 INTRODUCTION: The quality of acid in a sample of vinegar may be found by titrating the sample against a standard basic solution. ost commercial

More information

Chem 2115 Experiment #7. Volumetric Analysis & Consumer Chemistry Standardization of an unknown solution, analysis of vinegar & antacid tablets

Chem 2115 Experiment #7. Volumetric Analysis & Consumer Chemistry Standardization of an unknown solution, analysis of vinegar & antacid tablets Chem 2115 Experiment #7 Volumetric Analysis & Consumer Chemistry Standardization of an unknown solution, analysis of vinegar & antacid tablets OBJECTIVE: The goals of this experiment are to learn titration

More information

Acid Base Titration Experiment ACID - BASE TITRATION LAB

Acid Base Titration Experiment ACID - BASE TITRATION LAB ACID - BASE TITRATION LAB MATERIALS and CHEMICALS Burette 50 ml Burette clamp Ring stand Stirring rod Plastic funnel Beakers (50 ml, 100 ml, 400 ml) Graduated cylinder (25 ml, 50 ml) 0.10 M NaOH 0.10 M

More information

EXPERIMENT #8 Acid-Base I: Titration Techniques

EXPERIMENT #8 Acid-Base I: Titration Techniques EXPERIMENT #8 Acid-Base I: Titration Techniques OBJECTIVES: Dispense a precise volume of a solution with a buret Titrate a known volume of acid solution with a standard solution of base Reach a proper

More information

Experiment: Titration

Experiment: Titration Experiment: Titration INTRODUCTION In this experiment you will be determining the volume of sodium hydroxide solution of known concentration required to neutralize a known mass of an unknown acid in solution.

More information

Acid-Base Titration Acetic Acid Content of Vinegar

Acid-Base Titration Acetic Acid Content of Vinegar Acid-Base Titration Acetic Acid Content of Vinegar Prelab Assignment Read the entire lab. Write an objective and any hazards associated with this lab in your laboratory notebook. On a separate sheet of

More information

Synthesis of Benzoic Acid

Synthesis of Benzoic Acid E x p e r i m e n t 5 Synthesis of Benzoic Acid Objectives To use the Grignard reagent in a water free environment. To react the Grignard reagent with dry ice, CO 2(s). To assess the purity of the product

More information

TITRATION CURVES INTRODUCTION. Read and/or review Sections 4.10 and 16.7 in your textbook.

TITRATION CURVES INTRODUCTION. Read and/or review Sections 4.10 and 16.7 in your textbook. 1 TITRATION CURVES Copyright: Department of Chemistry, University of Idaho, Moscow, ID 83844-2343. 2013. INTRODUCTION Read and/or review Sections 4.10 and 16.7 in your textbook. In an acid - base titration,

More information

POGIL LAB EXERCISE 15 HOW DO YOU STANDARDIZE AN ACID AND BASE?

POGIL LAB EXERCISE 15 HOW DO YOU STANDARDIZE AN ACID AND BASE? POGIL LAB EXERCISE 15 HOW DO YOU STANDARDIZE AN ACID AND BASE? POGIL LAB 15 Page 1 of 10 Each member should assume his or her role at this time. The new manager takes charge of the POGIL folder and hands

More information

EXPERIMENT 5 ACID-BASE TITRATION

EXPERIMENT 5 ACID-BASE TITRATION EXPERIMENT 5 ACID-BASE TITRATION INTRODUCTION Much of chemistry and biology is concerned with the behavior of acids and bases. Acids and bases are participants in many reactions in nature, and many reactions

More information

Titration of HCl with Sodium Hydroxide

Titration of HCl with Sodium Hydroxide Titration of HCl with Sodium Hydroxide Lab Report for the Subject of Advanced Chemistry Anon Durongpisitkul, Karis Katekovit, Varun Saketharam,Thanon Thamvorapol, Chanon Anektanasup- January 28, 2017 1

More information

Chapter 9. Volumetric Analysis

Chapter 9. Volumetric Analysis Chapter 9 Volumetric Analysis The terms volumetric analysis, titrimetry and titration are used interchangeably to describe a procedure which analyses chemicals in solution by accurate volume measurement.

More information

Name Period Date. Lab 9: Analysis of Commercial Bleach

Name Period Date. Lab 9: Analysis of Commercial Bleach Name Period Date Lab 9: Analysis of Commercial Bleach Introduction Many common products are effective because they contain oxidizing agents. Some products, which contain oxidizing agents, are bleaches,

More information

Chemical Reactions: Titrations

Chemical Reactions: Titrations 1 Chemical Reactions: Titrations ORGANIZATION Mode: laboratory work, work in pairs Grading: lab notes, lab performance (titration accuracy), and post-lab report Safety: goggles, lab coat, closed-toe shoes,

More information

If you have a Mac do whatever you have to do to play it as a slide show I don t know Macs well. Dr. Buckley

If you have a Mac do whatever you have to do to play it as a slide show I don t know Macs well. Dr. Buckley For best results please view this as a slide show. You can hit the F5 key or go to the Slide Show tab on the menu bar and click on From Beginning. Page Down and Page Up will move you through the presentation.

More information

Titrations Worksheet and Lab

Titrations Worksheet and Lab Titrations Worksheet and Lab Vocabulary 1. Buret: a piece of glassware used for dispensing accurate volumes, generally reads to two places of decimal. 2. Titrant: the substance of known concentration added

More information

Experiment 8 Introduction to Volumetric Techniques I. Objectives

Experiment 8 Introduction to Volumetric Techniques I. Objectives Experiment 8 Introduction to Volumetric Techniques I Objectives 1. To learn the proper technique to use a volumetric pipette. 2. To learn the proper technique to use a volumetric flask. 3. To prepare a

More information

Pre-lab: Read section 9.9 (pages ) on acid-base titrations in the textbook. Complete the attached pre-lab by Tuesday, June 2.

Pre-lab: Read section 9.9 (pages ) on acid-base titrations in the textbook. Complete the attached pre-lab by Tuesday, June 2. Chemistry 121 Lab 5: Titration of an unknown acid Objective: Determine the concentration of an unknown monoprotic acid by titration, the process that matches the number of moles of base with the number

More information

Upon completion of this lab, the student will be able to:

Upon completion of this lab, the student will be able to: 1 Learning Outcomes EXPERIMENT 30A7: VINEGAR TITRATION Upon completion of this lab, the student will be able to: 1) Measure the amount of acetic acid in a solution of vinegar Introduction The molar concentration

More information

EXPERIMENT 22 SOLUBILITY OF A SLIGHTLY SOLUBLE ELECTROLYTE

EXPERIMENT 22 SOLUBILITY OF A SLIGHTLY SOLUBLE ELECTROLYTE EXPERIMENT 22 SOLUBILITY OF A SLIGHTLY SOLUBLE ELECTROLYTE INTRODUCTION Electrolytes are compounds that are present in solution as ions. They are more likely to be soluble in water than in most other liquids

More information

Titration of Acetic Acid in Vinegar Minneapolis Community and Technical College v.9.17

Titration of Acetic Acid in Vinegar Minneapolis Community and Technical College v.9.17 Titration of Acetic Acid in Vinegar Minneapolis Community and Technical College v.9.17 Objective: To practice the correct use of the burette, volumetric pipette, and volumetric flask in analytical titrations.

More information

GETTING THE END POINT TO APPROXIMATE. Two hours

GETTING THE END POINT TO APPROXIMATE. Two hours Chem 1312 Handout Experiment ONE Laboratory Time Required Special Equipment and Supplies Objective Safety First Aid GETTING THE END POINT TO APPROXIMATE THE EQUIVALENCE POINT Two hours Balance Potassium

More information

Standardizing a Solution of Sodium Hydroxide. Evaluation copy

Standardizing a Solution of Sodium Hydroxide. Evaluation copy Standardizing a Solution of Sodium Hydroxide Computer 6 It is often necessary to test a solution of unknown concentration with a solution of a known, precise concentration. The process of determining the

More information

CHM 130 Acid-Base Titration Molarity of Acetic Acid in Vinegar

CHM 130 Acid-Base Titration Molarity of Acetic Acid in Vinegar CHM 130 Acid-Base Titration Molarity of Acetic Acid in Vinegar INTRODUCTION One of the most important techniques for chemical analysis is titration to an equivalence point. To illustrate this procedure,

More information

EXPERIMENT 12B: TITRATION OF AN UNKNOWN ACID INTRODUCTION

EXPERIMENT 12B: TITRATION OF AN UNKNOWN ACID INTRODUCTION EXPERIMENT 12B: TITRATION OF AN UNKNOWN ACID INTRODUCTION In this experiment you will determine the molar mass of an unknown acid by titration with the sodium hydroxide you prepared and standardized in

More information

Chemistry 101 Experiment 12B-ANALYSIS OF COMMERCIAL VINEGARS

Chemistry 101 Experiment 12B-ANALYSIS OF COMMERCIAL VINEGARS Vinegar is a solution of acetic acid (HC2H3O2). The strength or concentration of the vinegar is usually given on the label of the bottle in percent by weight or percent acidity. The United States Food

More information

TITRATION OF AN ACID WITH A BASE

TITRATION OF AN ACID WITH A BASE TITRATION OF AN ACID WITH A BASE 1 NOTE: You are required to view the podcast entitled Use of Burets for Titrations before coming to lab this week. To view the podcast, consisting of eight episodes, go

More information

To see how this data can be used, follow the titration of hydrofluoric acid against sodium hydroxide:

To see how this data can be used, follow the titration of hydrofluoric acid against sodium hydroxide: Weak Acid Titration v010516 You are encouraged to carefully read the following sections in Tro (3 rd ed.) to prepare for this experiment: Sec 4.8, pp 168-174 (Acid/Base Titrations), Sec 16.4, pp 769-783

More information

Chem 2115 Experiment #7. Volumetric Analysis & Consumer Chemistry Standardization of an unknown solution and the analysis of antacid tablets

Chem 2115 Experiment #7. Volumetric Analysis & Consumer Chemistry Standardization of an unknown solution and the analysis of antacid tablets Chem 2115 Experiment #7 Volumetric Analysis & Consumer Chemistry Standardization of an unknown solution and the analysis of antacid tablets OBJECTIVE: The goals of this experiment are to learn titration

More information

Ascorbic Acid Titration of Vitamin C Tablets

Ascorbic Acid Titration of Vitamin C Tablets Ascorbic Acid Titration of Vitamin C Tablets Introduction This experiment illustrates how titration, the process of slowly adding one solution to another until the reaction between the two is complete,

More information

Titration of Vinegar

Titration of Vinegar EXPERIMENT 8 Prepared by Edward L. Brown, Lee University and Verrill M. Norwood, Cleveland State Community Collee The student will become familiar with the techniques of titration and expressin a solution

More information

Ascorbic Acid Titration of Vitamin C Tablets

Ascorbic Acid Titration of Vitamin C Tablets Ascorbic Acid Titration of Vitamin C Tablets Introduction This experiment illustrates how titration, the process of slowly adding one solution to another until the reaction between the two is complete,

More information

Chemistry 151 Last Updated Dec Lab 10: The Neutralizing Ability of an Antacid (Titrations, Pt II)

Chemistry 151 Last Updated Dec Lab 10: The Neutralizing Ability of an Antacid (Titrations, Pt II) Chemistry 151 Last Updated Dec. 2013 Lab 10: The Neutralizing Ability of an Antacid (Titrations, Pt II) Introduction The active ingredient of many antacids is a base that neutralizes excess stomach acid,

More information

Solubility of KHT and Common ion Effect

Solubility of KHT and Common ion Effect Solubility of KHT and Common ion Effect v010516 You are encouraged to carefully read the following sections in Tro (3 rd ed.) to prepare for this experiment: Sec 16.5, pp 783-788 (Solubility Equilibria

More information

Determination of the K a Value and Molar Mass of an Unknown Weak Acid

Determination of the K a Value and Molar Mass of an Unknown Weak Acid 10 Determination of the K a Value and Molar Mass of an Unknown Weak Acid Introduction In this experiment you will titrate a monoprotic weak acid with a strong base, and measure the titration curve with

More information

EXPERIMENT #9 PRELAB EXERCISES. Redox Titration (Molarity Version) Name Section. 1. Balance the following redox reaction under acidic conditions.

EXPERIMENT #9 PRELAB EXERCISES. Redox Titration (Molarity Version) Name Section. 1. Balance the following redox reaction under acidic conditions. EXPERIMENT #9 PRELAB EXERCISES Redox Titration (Molarity Version) Name Section 1. Balance the following redox reaction under acidic conditions. C 2 O 2-4 (aq) + MnO - 4 (aq) CO 2 (g) + Mn 2+ (aq) 2. A

More information

NaOH (aq) + HCl (aq) NaCl (aq) + H 2 O (l)

NaOH (aq) + HCl (aq) NaCl (aq) + H 2 O (l) EXPERIMENT 21 Molarity of a Hydrochloric Acid Solution by Titration INTRODUCTION Volumetric analysis is a general term meaning any method in which a volume measurement is the critical operation; however,

More information

Acid / Base Titrations

Acid / Base Titrations Acid / Base Titrations v051413_7pm Objectives: Determine the concentration of a base solution using an acid standard. Optional: Precipitate an ionic salt for percent yield determination using the standardized

More information

Partner: Alisa 1 March Preparation and Properties of Buffer Solutions

Partner: Alisa 1 March Preparation and Properties of Buffer Solutions Partner: Alisa 1 March 2012 Preparation and Properties of Buffer Solutions Purpose: The purpose of this experiment is to compare the ph effect on buffered and non-buffered solutions as well as making a

More information

Acid-Base Titrations

Acid-Base Titrations Chem 1252, General Chemistry I Lab Johnson Acid-Base Titrations Introduction Titration is a convenient quantitative method for accurately determining unknown concentrations of solutions. A necessary requirement

More information

Titration with an Acid and a Base

Titration with an Acid and a Base Skills Practice Titration with an Acid and a Base Titration is a process in which you determine the concentration of a solution by measuring what volume of that solution is needed to react completely with

More information

CHEM 132 Lab 11 Western Carolina University

CHEM 132 Lab 11 Western Carolina University Name Lab Section Chemistry 132 Lab 11 How Effective is Your Antacid? Prelaboratory Exercise 1. How many grams of NaOH will you need to make 250 of 0.5 M NaOH solution? 2. What is the purpose of the first,

More information

Ascorbic Acid Titration of Vitamin C Tablets

Ascorbic Acid Titration of Vitamin C Tablets Ascorbic Acid Titration of Vitamin C Tablets Introduction This experiment illustrates how titration, the process of slowly adding one solution to another until the reaction between the two is complete,

More information

Supernatant: The liquid layer lying above the solid layer after a precipitation reaction occurs.

Supernatant: The liquid layer lying above the solid layer after a precipitation reaction occurs. Limiting Reagent Introduction The quantities of substances involved in a chemical reaction represented by a balanced equation are often referred to as stoichiometric amounts. Solution stoichiometry is

More information

Experiment 10. Acid Base Titration

Experiment 10. Acid Base Titration Experiment 10 Acid Base Titration Definitions: Titration A technique to accurately and precisely measure something, most often acids or bases Acids Most acids are molecules that behave as if they were

More information

Synthesis and Analysis of a Coordination Compound

Synthesis and Analysis of a Coordination Compound Synthesis and Analysis of a Coordination Compound In addition to forming salts with anions, transition metal cations can also associate with neutral molecules (and ions) through a process called ligation.

More information

Determination of the Equivalent Weight and Ionization Constant of a Weak Acid

Determination of the Equivalent Weight and Ionization Constant of a Weak Acid Determination of the Equivalent Weight and Ionization Constant of a Weak Acid Introduction: The object of this experiment will be to determine the ionization constant, K a, and the equivalent weight of

More information

Experiment 3: Acids, Bases, and Buffers

Experiment 3: Acids, Bases, and Buffers Experiment 3: Acids, Bases, and Buffers Reading: Chemistry the Central Science, Chapter 16.1-16.7 Introduction: The reaction of an acid and a base is a neutralization reaction. The technique of accurately

More information

experiment7 Explaining the difference between analyte and standard solutions. Know the definition of equivalence point.

experiment7 Explaining the difference between analyte and standard solutions. Know the definition of equivalence point. 93 experiment7 Determining an Unknown Concentration Understanding the concept of titration. LECTURE AND LAB SKILLS EMPHASIZED Explaining the difference between analyte and standard solutions. Know the

More information

Experiment #10: Analysis of Antacids

Experiment #10: Analysis of Antacids Experiment #10: Analysis of Antacids Purpose: In this experiment you will prepare one solution that is approximately 0.1 M NaOH. Then you will standardize this solution, which means that you will experimentally

More information

Titration of an Unknown Acid

Titration of an Unknown Acid Experiment 6 Titration of an Unknown Acid Prepared by Stephen E. Schullery and Ross Nord, Eastern Michigan University PURPSE To determine the apparent molar mass of an unknown monoprotic acid by titrating

More information

Supernatant: The liquid layer lying above the solid layer after a precipitation reaction occurs.

Supernatant: The liquid layer lying above the solid layer after a precipitation reaction occurs. Limiting Reagent Introduction The quantities of substances involved in a chemical reaction represented by a balanced equation are often referred to as stoichiometric amounts. Solution stoichiometry is

More information

ph Measurement and its Applications

ph Measurement and its Applications ph Measurement and its Applications Objectives: To measure the ph of various solutions using indicators and ph meters. To perform a ph titration. To create and study buffer solutions. To determine the

More information

Pre-lab: Read sections 10.6 in the textbook. Complete the attached pre-lab by Thursday, May 22.

Pre-lab: Read sections 10.6 in the textbook. Complete the attached pre-lab by Thursday, May 22. Lab 5: Titration of an unknown acid Objective: Determine the concentration of an unknown monoprotic acid by titration, the process that matches the number of moles of base with the number of moles of acid.

More information

Ascorbic Acid Titration of Vitamin C Tablets This lab will be completed individually! Make sure you come prepared!

Ascorbic Acid Titration of Vitamin C Tablets This lab will be completed individually! Make sure you come prepared! Ascorbic Acid Titration of Vitamin C Tablets This lab will be completed individually! Make sure you come prepared! This laboratory experiment has a formal report. Consult the guidelines for writing a formal

More information

Experimental Procedure. Lab 406

Experimental Procedure. Lab 406 Experimental Procedure Lab 406 Overview This experiment is to be complete in cooperation with other chemists/chemist groups in the laboratory. In PART A, a standardized solution of hydrochloric acid is

More information

ph Titration Curves You will need about 10 ml of ~6M NaOH solution and about 40 ml of each acid solution and about 1.5 grams of KHP.

ph Titration Curves You will need about 10 ml of ~6M NaOH solution and about 40 ml of each acid solution and about 1.5 grams of KHP. ph Titration Curves In this experiment you will generate titration curves for the titration of a monoprotic strong acid, a monoprotic weak acid, and a diprotic weak acid. From the titration curves you

More information

Partner: Judy 29 March Analysis of a Commercial Bleach

Partner: Judy 29 March Analysis of a Commercial Bleach Partner: Judy 29 March 2012 Analysis of a Commercial Bleach Purpose: The purpose of this lab is to determine the amount of sodium hypochlorite (NaClO) in commercial bleach. This can be done by forming

More information

Standardization of a Primary Standard & Determination of Concentration by Acid-Base Titration

Standardization of a Primary Standard & Determination of Concentration by Acid-Base Titration Standardization of a Primary Standard & Determination of Concentration by Acid-Base Titration It is often necessary to test a solution of unknown concentration with a solution of a known, precise concentration.

More information

DETERMINATION OF THE SOLUBILITY PRODUCT OF GROUPII HYDROXIDES

DETERMINATION OF THE SOLUBILITY PRODUCT OF GROUPII HYDROXIDES INTRODUCTION DETERMINATION OF THE SOLUBILITY PRODUCT OF GROUPII HYDROXIDES SOLUBILTY EQUILIBRIA Many systems in chemistry appear to be static when in fact they are in (dynamic) equilibrium. When a system

More information

Table of Contents. Purpose... 2 Background... 2 Prelab Questions... 3 Procedure:... 3 Calculations:... 4

Table of Contents. Purpose... 2 Background... 2 Prelab Questions... 3 Procedure:... 3 Calculations:... 4 Table of Contents Purpose... 2 Background... 2 Prelab Questions... 3 Procedure:... 3 Calculations:... 4 CHM 212 Experiment 4 Determination of the Ka of Potassium Hydrogen Phthalate (KHP) Using a Gran Plot

More information

Experiment 7A ANALYSIS OF BRASS

Experiment 7A ANALYSIS OF BRASS Experiment 7A ANALYSIS OF BRASS FV 10/21/10 MATERIALS: Spectronic 20 spectrophotometers, 2 cuvettes, brass sample, 7 M HNO 3, 0.100 M CuSO 4, 2 M NH 3, two 50 ml beakers, 100 ml beaker, two 25 ml volumetric

More information

Experiment 8 and 9 Weak Acids and Bases: Exploring the Nature of Buffers

Experiment 8 and 9 Weak Acids and Bases: Exploring the Nature of Buffers Experiment 8 and 9 Weak Acids and Bases: Exploring the Nature of Buffers Pre-Laboratory Assignments Reading: Textbook Chapter 16 Chapter 17:1-3 This Laboratory Handout Pre-Laboratory Assignments: Complete

More information

6 Acid Base Titration

6 Acid Base Titration E x p e r i m e n t Acid Base Titration Experiment : http://genchemlab.wordpress.com/-titration/ objectives To understand the concept of titration. To explain the difference between the analyte and standard

More information

LAB 8: DETERMINATION OF ACETIC ACID CONTENT IN VINEGAR

LAB 8: DETERMINATION OF ACETIC ACID CONTENT IN VINEGAR LAB 8: DETERMINATIN F AETI AID NTENT IN VINEGAR Lab format: This lab is designed for delivery using the Remote Web-based Science Laboratory (RWSL) or a lab kit. INTRDUTIN In an acid-base titration, the

More information

CHEM Practice to be done before the lab. Experiment 9 Introduction to Volumetric Techniques II. Objectives

CHEM Practice to be done before the lab. Experiment 9 Introduction to Volumetric Techniques II. Objectives 1 CHEM 0011 Experiment 9 Introduction to Volumetric Techniques II Objectives 1. To learn the proper technique to use a burette. 2. To learn the proper technique to carry out a titration. 3. To verify the

More information

Learn to do quantitative titration reactions. Observe the mole ratios of several simple chemical reactions.

Learn to do quantitative titration reactions. Observe the mole ratios of several simple chemical reactions. CHAPTER 6 Stoichiometry of Reactions in Solution Objectives The objectives of this laboratory are to: Learn to do quantitative titration reactions. Observe the mole ratios of several simple chemical reactions.

More information

Chemistry 6A F2007. Dr. J.A. Mack 11/28/07. Exam 3: Friday 12/7/07 (here in lecture) Standard Solutions: What will be covered on the exam?

Chemistry 6A F2007. Dr. J.A. Mack 11/28/07. Exam 3: Friday 12/7/07 (here in lecture) Standard Solutions: What will be covered on the exam? Chemistry 6A F2007 Dr. J.A. Mack Exam : Friday 12/7/07 (here in lecture) What will be covered on the exam? Chapter 6: 6.9-6.15 Chapter 7: All Chapter 8: All Chapter 9: 9.1-9.9 Any thing from lab as well

More information

NEUTRALIZATION TITRATION-2 TITRATION OF AN ANTACID (Exp. 4)

NEUTRALIZATION TITRATION-2 TITRATION OF AN ANTACID (Exp. 4) Objective NEUTRALIZATION TITRATION-2 TITRATION OF AN ANTACID (Exp. 4) The aim of this experiment is to carry out titration of antacid tablets and to determine acetic acid content of vinegar. a) Titration

More information

8 Titration of Acids and bases

8 Titration of Acids and bases 8 Titration of Acids and bases Name: Date: Section: Objectives Reinforce acid-base chemistry principles from chapter 4 in Silberberg Standardize a sodium hydroxide solution Determine the molarity of an

More information

O H 3 O 1 1 A. O 1 1 OH (K w

O H 3 O 1 1 A. O 1 1 OH (K w CHAPTER 8 Acid Base Titration Curves Objectives The objectives of this experiment are to: Understand the titration curves for the following solutions: a strong acid: hydrochloric acid, HCl. a weak acid:

More information

Experiment 5: Determining the Stoichiometry and Products of a Redox Reaction

Experiment 5: Determining the Stoichiometry and Products of a Redox Reaction Experiment 5: Determining the Stoichiometry and Products of a Redox Reaction Reading: Chapter sections 4.4-4.6 and 20.1-20.2 in your course text and this lab handout Ongoing Learning Goals: To use a scientific

More information

Percentage of Acetic Acid in Vinegar

Percentage of Acetic Acid in Vinegar Microscale Percentage of Acetic Acid in Vinegar When sweet apple cider is fermented in the absence of oxygen, the product is an acid, vinegar. Most commercial vinegars are made by fermentation, but some,

More information

PURPOSE: 1. To illustrate an oxidation-reduction titration with potassium permanganate 2. To determine the percent mass of iron in an unknown.

PURPOSE: 1. To illustrate an oxidation-reduction titration with potassium permanganate 2. To determine the percent mass of iron in an unknown. PURPOSE: 1. To illustrate an oxidation-reduction titration with potassium permanganate 2. To determine the percent mass of iron in an unknown. PRINCIPLES: Oxidation and reduction reactions, commonly called

More information

Chesapeake Campus Chemistry 111 Laboratory

Chesapeake Campus Chemistry 111 Laboratory Chesapeake Campus Chemistry 111 Laboratory Objectives Calculate the concentration of a secondary standard through titration with a primary standard. Titrate a sample of carbonated soda with a standard

More information

Titration 2: CH 3 COOH Titrated with NaOH

Titration 2: CH 3 COOH Titrated with NaOH Titration 2: CH 3 COOH Titrated with NaOH Titration 1: Acid is CH 3 COOH, phenolphthalein as the indicator 1. Obtain about 60 ml of the standardized ( 0.1 M) NaOH solution. CAUTION: Sodium hydroxide solution

More information

EXPERIMENT. Titration for Acetic Acid in Vinegar

EXPERIMENT. Titration for Acetic Acid in Vinegar EXPERIMENT Titration for Acetic Acid in Vinegar Hands-On Labs, Inc. Version 42-0208-00-02 Review the safety materials and wear goggles when working with chemicals. Read the entire exercise before you begin.

More information

PURPOSE: To determine the Rate Law for the following chemical reaction:

PURPOSE: To determine the Rate Law for the following chemical reaction: PURPOSE: To determine the Rate Law for the following chemical reaction: H 2 O 2 (aq) + 2 I - (aq) + 2 H 3 O + (aq) 4 H 2 O(l) + I 2 (aq) Hydrogen Iodide Hydronium Water Iodine Peroxide Ion Ion PRINCIPLES:

More information

Experiment 7: Titration of an Antacid

Experiment 7: Titration of an Antacid 1 Experiment 7: Titration of an Antacid Objective: In this experiment, you will standardize a solution of base using the analytical technique known as titration. Using this standardized solution, you will

More information

Chemistry Determination of Mixed Acids

Chemistry Determination of Mixed Acids Chemistry 3200 Acid-base titration is one of the most common operations in analytical chemistry. A solution containing an unknown amount of ionizable hydrogen can be titrated with a solution of standard

More information

Experiment 10 Acid-Base Titrimetry. Objectives

Experiment 10 Acid-Base Titrimetry. Objectives Experiment 10 Acid-Base Titrimetry Objectives 1. To standardize an acid, HCl, solution. 2. To determine the concentration of an unknown Na 2 CO 3, sodium carbonate solution. Introduction Alkaline conditions

More information

# 12 ph-titration of Strong Acids with Strong Bases

# 12 ph-titration of Strong Acids with Strong Bases # 12 ph-titration of Strong Acids with Strong Bases Purpose: A strong acid solution is titrated with a strong base solution. A titration curve is then used to determine the endpoint and find the concentration

More information