CHEMISTRY. Chapter 16 Acid-Base Equilibria

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "CHEMISTRY. Chapter 16 Acid-Base Equilibria"

Transcription

1 CHEMISTRY The Central Science 8 th Edition Chapter 16 Acid-Base Equilibria Kozet YAPSAKLI

2 Why study acids bases? bases are common in the everyday world as well as in the lab. Some common acidic products vinegar (dilute acetic acid), soft drinks (carbonic acid), aspirin (acetylsalicylic acid), vitamin C (ascorbic acid) Some common basic products Antacids such as milk of magnesia (magnesium hydroxide) calcium carbonate, household ammonia, oven drain cleaners (sodium hydroxide), some bleaches (sodium hydroxide)

3 Problems Some basic substances do not have OH - Confined to H 2 O solutions

4 Some Definitions Brønsted Lowry Acid: Base: Proton donor Proton acceptor Bronsted-Lowry Concept (1923) Acid-base reaction involves proton transfer HA + B HB + + A - Base: proton acceptor does not have to have OH - in formula

5 HCl + H 2 O H 3 O + + Cl - acid base NH 3 + H 2 O NH OH - base acid & bases can be molecules or ions Back reaction is also a proton transfer.

6 NH 3 + H 2 O NH OH - base acid acid base Acid-base conjugate pairs Conjugate Acid-Base Pair (HA/A -, HB + /B) Two chemical species whose formulas differ by only one proton acid conj. base + H + base + H + conj. acid

7 Acid Base Strength Strong acids are completely dissociated in water. Their conjugate bases are quite weak. Weak acids only dissociate partially in water. Their conjugate bases are weak bases. Substances with negligible acidity do not dissociate in water. Their conjugate bases are exceedingly strong.

8

9 ph ph is defined as the negative base-10 logarithm of the hydronium ion concentration. In neutral water, ph = log [H 3 O + ] K w = [H 3 O + ] [OH ] = [H 3 O + ] = ( ) 1/2 =

10 ph Therefore, in neutral water, ph log[h3o ] log[h ] poh log[oh ph = log ( ) = 7.00 An acid has a higher [H 3 O + ] than neutral water, so its ph is <7 A base has a lower [H 3 O + ] than neutral water, so its ph is >7. - ]

11 These are the ph values for several common substances.

12 Other p Scales The p in ph tells us to take the negative log of the quantity (in this case, hydrogen ions). Some similar examples are poh log [OH ] pk w log K w ph + poh = pk w = 14.00

13 How Do We Measure ph? For less accurate measurements, one can use Litmus paper Red paper turns blue above ~ph = 8 Blue paper turns red below ~ph = 5 An indicator For more accurate ph meter

14 Strong Seven strong acids are HCl, HBr, HI, HNO 3, H 2 SO 4, HClO 3, HClO 4. These are, by definition, strong electrolytes exist totally as ions in aqueous solution. HNO 3 (aq) + H 2 O(l) H 3 O + (aq) + NO 3- (aq) For the monoprotic strong acids, [H 3 O + ] = [acid].

15 Strong Most ionic hydroxides are strong bases (e.g. NaOH, KOH, Ca(OH) 2 ). Strong bases are the soluble hydroxides, which are the alkali metal heavier alkaline earth metal hydroxides (Ca 2+, Sr 2+, Ba 2+ ). Again, these substances dissociate completely in aqueous solution.

16 Weak Weak acids are only partially ionized in solution. There is a mixture of ions unionized acid in solution. Therefore, weak acids are in equilibrium: HA(aq) + H 2 O(l) H 3 O + (aq) + A - (aq) K a [H O ][A - 3 ] [HA] This equilibrium constant is called the aciddissociation constant, K a.

17 Dissociation Constants The greater the value of K a, the stronger the acid. If Ka >> 1, then the acid is completely ionized the acid is a strong acid.

18 Polyprotic Have more than one acidic proton. If the difference between the K a for the first dissociation subsequent K a values is 10 3 or more, the ph generally depends only on the first dissociation.

19 Polyprotic The protons are removed in steps not all at once: H 2 SO 3 (aq) H + (aq) + HSO - 3 (aq) K a1 = 1.7 x 10-2 HSO - 3 (aq) H + (aq) + SO 2-3 (aq) K a2 = 6.4 x 10-8 It is always easier to remove the first proton in a polyprotic acid than the second. Therefore, K a1 > K a2 > K a3 etc.

20 Weak react with water to produce hydroxide ion. The base dissociation constant, Kb, is defined as [NH ][OH - 4 ] K b [NH3]

21 K a K b K a K b are related in this way: K a K b = K w Therefore, if you know one of them, you can calculate the other. Taking negative logarithms: pkw pka pkb

22 Read: Reactions of Anions Cations with Water Read: Effect of Cations Anions Not responsible for the Part Acid-Base Behavior Chemical Structure Lewis

Lecture Presentation. Chapter 16. Acid Base Equilibria. John D. Bookstaver St. Charles Community College Cottleville, MO Pearson Education, Inc.

Lecture Presentation. Chapter 16. Acid Base Equilibria. John D. Bookstaver St. Charles Community College Cottleville, MO Pearson Education, Inc. Lecture Presentation Chapter 16 Acid Base Equilibria John D. Bookstaver St. Charles Community College Cottleville, MO Some Definitions Arrhenius An acid is a substance that, when dissolved in water, increases

More information

Chapter 16. Chemistry, The Central Science, 11th edition Theodore L. Brown, H. Eugene LeMay, Jr., and Bruce E. Bursten

Chapter 16. Chemistry, The Central Science, 11th edition Theodore L. Brown, H. Eugene LeMay, Jr., and Bruce E. Bursten Chemistry, The Central Science, 11th edition Theodore L. Brown, H. Eugene LeMay, Jr., Bruce E. Bursten Chapter 16 John D. Bookstaver St. Charles Community College Cottleville, MO Some Definitions Arrhenius

More information

Chapter 16 Acid-Base Equilibria

Chapter 16 Acid-Base Equilibria Page 1 of 20 Chapter 16 Acid-Base Equilibria 16.1 Acids and Bases: A Brief Review Acids: taste sour and cause certain dyes to change color. Bases: taste bitter and feel soapy. Arrhenius concept o acids

More information

Chapter 16. Dr Ayman Nafady

Chapter 16. Dr Ayman Nafady Chemistry, The Central Science, 11th edition Theodore L. Brown, H. Eugene LeMay, Jr., Bruce E. Bursten Chapter 16 Dr Ayman Nafady John D. Bookstaver St. Charles Community College Cottleville, MO Some Definitions

More information

ACIDS AND BASES CONTINUED

ACIDS AND BASES CONTINUED ACIDS AND BASES CONTINUED WHAT HAPPENS WHEN AN ACID DISSOLVED IN WATER? Water acts as a Brønsted Lowry base and abstracts a proton (H+) from the acid. As a result, the conjugate base of the acid and a

More information

Chap 16 Chemical Equilibrium HSU FUYIN

Chap 16 Chemical Equilibrium HSU FUYIN Chap 16 Chemical Equilibrium HSU FUYIN 1 Definitions: Arrhenius & Brønsted Lowry acid and base Arrhenius theory: An acid is a substance that, when dissolved in water, increases the concentration of hydrogen

More information

Chapter 16. Acid-Base Equilibria

Chapter 16. Acid-Base Equilibria Chapter 16 Acid-Base Equilibria Arrhenius Definition Acids produce hydrogen ions in aqueous solution. Bases produce hydroxide ions when dissolved in water. Limits to aqueous solutions. Only one kind of

More information

Grace King High School Chemistry Test Review

Grace King High School Chemistry Test Review CHAPTER 19 Acids, Bases & Salts 1. ACIDS Grace King High School Chemistry Test Review UNITS 7 SOLUTIONS &ACIDS & BASES Arrhenius definition of Acid: Contain Hydrogen and produce Hydrogen ion (aka proton),

More information

Chapter 16 - Acids and Bases

Chapter 16 - Acids and Bases Chapter 16 - Acids and Bases 16.1 Acids and Bases: The Brønsted Lowry Model 16.2 ph and the Autoionization of Water 16.3 Calculations Involving ph, K a and K b 16.4 Polyprotic Acids 16.1 Acids and Bases:

More information

Chapter Menu Chapter Menu

Chapter Menu Chapter Menu Chapter Menu Chapter Menu Section 18.1 Section 18.3 Section 18.4 Introduction to Acids and Bases Hydrogen Ions and ph Neutralization Section 18.1 Intro to Acids and Bases Objectives: Compare the Arrhenius,

More information

Chapter 16. Acid-Base Equilibria

Chapter 16. Acid-Base Equilibria Chapter 16. Acid-Base Equilibria 16.1 Acids and Bases: A Brief Review Acids taste sour and cause certain dyes to change color. Bases taste bitter and feel soapy. Arrhenius concept of acids and bases: An

More information

Chemistry I Notes Unit 10: Acids and Bases

Chemistry I Notes Unit 10: Acids and Bases Chemistry I Notes Unit 10: Acids and Bases Acids 1. Sour taste. 2. Acids change the color of acid- base indicators (turn blue litmus red). 3. Some acids react with active metals and release hydrogen gas,

More information

In the Brønsted-Lowry system, a Brønsted-Lowry acid is a species that donates H + and a Brønsted-Lowry base is a species that accepts H +.

In the Brønsted-Lowry system, a Brønsted-Lowry acid is a species that donates H + and a Brønsted-Lowry base is a species that accepts H +. 16.1 Acids and Bases: A Brief Review Arrhenius concept of acids and bases: an acid increases [H + ] and a base increases [OH ]. 16.2 BrønstedLowry Acids and Bases In the BrønstedLowry system, a BrønstedLowry

More information

(Label the Conjugate Pairs) Water in the last example acted as a Bronsted-Lowry base, and here it is acting as an acid. or

(Label the Conjugate Pairs) Water in the last example acted as a Bronsted-Lowry base, and here it is acting as an acid. or Chapter 16 - Acid-Base Equilibria Arrhenius Definition produce hydrogen ions in aqueous solution. produce hydroxide ions when dissolved in water. Limits to aqueous solutions. Only one kind of base. NH

More information

Acids and Bases. Chapter 15. Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

Acids and Bases. Chapter 15. Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Acids and Bases Chapter 15 Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Acids Have a sour taste. Vinegar owes its taste to acetic acid. Citrus fruits contain

More information

Introduction to Acids & Bases II. Packet #26

Introduction to Acids & Bases II. Packet #26 Introduction to Acids & Bases II Packet #26 1 Review I Svante Arrhenius was the first person to recognize the essential nature of acids and bases. 2 Review II Arrhenius postulated that: Acids produce hydrogen

More information

Chapter 15 - Acids and Bases Fundamental Concepts

Chapter 15 - Acids and Bases Fundamental Concepts Chapter 15 - Acids and Bases Fundamental Concepts Acids and Bases: Basic Definitions Properties of Acids Sour Taste React with active metals (Al, Zn, Fe) to yield H 2 gas: Corrosive React with carbonates

More information

Acids & Bases. Chapter 17

Acids & Bases. Chapter 17 Acids & Bases Chapter 17 Arrhenius Definition: Classic Definition of Acids and Bases Acid: A substance that increases the hydrogen ion concetration, [H + ], (also thought of as hydronium ion, H 3 O + )

More information

Chapter 16: Acid Base Equilibria Chapter 16 Acid-Base Equilibria Learning Standards & Objectives;

Chapter 16: Acid Base Equilibria Chapter 16 Acid-Base Equilibria Learning Standards & Objectives; Chapter 16: Acid Base Equilibria Chapter 16 Acid-Base Equilibria Learning Standards & Objectives; Chapter 16 AP16-1,2-01 AP16-1,2-02 AP16-1,2-03 AP16-3,4-01 AP16-3,4-02 AP16-5-01 AP16-6,7-01 AP16-6,7-02

More information

ACID BASE EQUILIBRIUM

ACID BASE EQUILIBRIUM ACID BASE EQUILIBRIUM Part one: Acid/Base Theories Learning Goals: to identify acids and bases and their conjugates according to Arrhenius and Bronstead Lowry Theories. to be able to identify amphoteric

More information

Introduction to Acids & Bases. Packet #26

Introduction to Acids & Bases. Packet #26 Introduction to Acids & Bases Packet #26 Review I Svante Arrhenius was the first person to recognize the essential nature of acids and bases. Review II Arrhenius postulated that: Acids produce hydrogen

More information

Lesson Five: Acids, Bases, ph, and Buffers

Lesson Five: Acids, Bases, ph, and Buffers Lesson Five: Acids, Bases, ph, and Buffers Arrhenius Acids and Bases Acids and bases can be defined a number of ways. One of the oldest and most common ways is the definition according to Arrhenius, named

More information

Chapter 16 Acids and Bases. Chapter 16 Acids and Bases

Chapter 16 Acids and Bases. Chapter 16 Acids and Bases . Chapter 16 Acids and Bases 1 Some Definitions Arrhenius Acid: Substance that, when dissolved in water, increases the concentration of hydrogen ions. Base: Substance that, when dissolved in water, increases

More information

Chapter 14 Acids and Bases

Chapter 14 Acids and Bases Properties of Acids and Bases Chapter 14 Acids and Bases Svante Arrhenius (1859-1927) First to develop a theory for acids and bases in aqueous solution Arrhenius Acids Compounds which dissolve (dissociate)

More information

Chapter 10 - Acids & Bases

Chapter 10 - Acids & Bases Chapter 10 - Acids & Bases 10.1-Acids & Bases: Definitions Arrhenius Definitions Acids: substances that produce hydrogen ions when dissolved in H 2 O Common Strong Acids: Common Weak acids: Organic carboxylic

More information

CHAPTER 14 ACIDS AND BASES

CHAPTER 14 ACIDS AND BASES CHAPTER 14 ACIDS AND BASES Topics Definition of acids and bases Bronsted-Lowry Concept Dissociation constant of weak acids Acid strength Calculating ph for strong and weak acids and bases Polyprotic acids

More information

Acids and Bases. Two important classification of compounds - Acids and Bases. Properties of BASES

Acids and Bases. Two important classification of compounds - Acids and Bases. Properties of BASES ACIDS AND BASES Acids and Bases Two important classification of compounds - Acids and Bases Properties of ACIDS Taste Sour/Tart Stings and burns the skin Reacts with bases Turns blue litmus paper red Reacts

More information

What is an acid? What is a base?

What is an acid? What is a base? What is an acid? What is a base? Properties of an acid Sour taste Turns litmus paper red Conducts electric current Some acids are strong and some are weak Properties of a base Bitter taste Slippery to

More information

Acids and Bases. Properties, Reactions, ph, and Titration

Acids and Bases. Properties, Reactions, ph, and Titration Acids and Bases Properties, Reactions, ph, and Titration C-19 2017 Properties of acids 1. Taste Sour (don t try this except with foods). 2. Are electrolytes (conduct electricity). Some are strong, some

More information

What is an acid? What is a base?

What is an acid? What is a base? What is an acid? What is a base? Properties of an acid Sour taste Turns litmus paper red Conducts electric current Some acids are strong and some are weak Properties of a base Bitter taste Slippery to

More information

Ch 18 Acids and Bases Big Idea: Acids and Bases can be defined in terms of hydrogen ions and hydroxide ions or in terms of electron pairs.

Ch 18 Acids and Bases Big Idea: Acids and Bases can be defined in terms of hydrogen ions and hydroxide ions or in terms of electron pairs. Ch 18 Acids and Bases Big Idea: Acids and Bases can be defined in terms of hydrogen ions and hydroxide ions or in terms of electron pairs. Ch 18 - Acids and Bases I CAN: 1) Compare properties of acids

More information

Chapter 14. Acids and Bases

Chapter 14. Acids and Bases Chapter 14 Acids and Bases Section 14.1 The Nature of Acids and Bases Models of Acids and Bases Arrhenius: Acids produce H + ions in solution, bases produce OH - ions. Brønsted Lowry: Acids are proton

More information

Chapter 16. Acids and Bases. Copyright Cengage Learning. All rights reserved 1

Chapter 16. Acids and Bases. Copyright Cengage Learning. All rights reserved 1 Chapter 16 Acids and Bases Copyright Cengage Learning. All rights reserved 1 Section 16.1 Acids and Bases Models of Acids and Bases Arrhenius: Acids produce H + ions in solution, bases produce OH ions.

More information

Acid-Base Equilibria. 1.NH 4 Cl 2.NaCl 3.KC 2 H 3 O 2 4.NaNO 2. Solutions of a Weak Acid or Base

Acid-Base Equilibria. 1.NH 4 Cl 2.NaCl 3.KC 2 H 3 O 2 4.NaNO 2. Solutions of a Weak Acid or Base Acid-Base Equilibria 1 Will the following salts be acidic, basic or neutral in aqueous solution? 1.NH 4 Cl.NaCl.KC H O 4.NaNO A = acidic B = basic C = neutral Solutions of a Weak Acid or Base The simplest

More information

What are Acids and Bases? What are some common acids you know? What are some common bases you know? Where is it common to hear about ph balanced

What are Acids and Bases? What are some common acids you know? What are some common bases you know? Where is it common to hear about ph balanced What are Acids and Bases? What are some common acids you know? What are some common bases you know? Where is it common to hear about ph balanced materials? Historically, classified by their observable

More information

Chemistry: The Central Science. Chapter 16: Acid-Base Equilibria. 16.1: Acids and Bases: A Brief Review

Chemistry: The Central Science. Chapter 16: Acid-Base Equilibria. 16.1: Acids and Bases: A Brief Review Chemistry: The Central Science Chapter 16: Acid-Base Equilibria 16.1: Acids and Bases: A Brief Review Acids have a sour taste and cause certain dyes to change color Base have a bitter taste and feel slippery

More information

Acid-Base Equilibria. 1.NH 4 Cl 2.NaCl 3.KC 2 H 3 O 2 4.NaNO 2. Acid-Ionization Equilibria. Acid-Ionization Equilibria

Acid-Base Equilibria. 1.NH 4 Cl 2.NaCl 3.KC 2 H 3 O 2 4.NaNO 2. Acid-Ionization Equilibria. Acid-Ionization Equilibria Acid-Ionization Equilibria Acid-Base Equilibria Acid ionization (or acid dissociation) is the reaction of an acid with water to produce hydronium ion (hydrogen ion) and the conjugate base anion. (See Animation:

More information

Acids and Bases. A strong base is a substance that completely ionizes in aqueous solutions to give a cation and a hydroxide ion.

Acids and Bases. A strong base is a substance that completely ionizes in aqueous solutions to give a cation and a hydroxide ion. Acid-Base Theories Arrhenius Acids and Bases (1884) Acids and Bases An acid is a substance that, when dissolved in water, increases the concentration of hydrogen ions. A base is a substance that, when

More information

Acids and bases. for it cannot be But I am pigeon-liver d and lack gall To make oppression bitter Hamlet. Different concepts Calculations and scales

Acids and bases. for it cannot be But I am pigeon-liver d and lack gall To make oppression bitter Hamlet. Different concepts Calculations and scales Acids and bases for it cannot be But I am pigeon-liver d and lack gall To make oppression bitter Hamlet Different concepts Calculations and scales Learning objectives You will be able to: Identify acids

More information

Chapter 16 Acid Base Equilibria

Chapter 16 Acid Base Equilibria Chapter 16 Acid Base Equilibria 2015 Pearson Education, Inc. Acid Base Equilibria 16.1 : A Brief Review 16.2 Brønsted Lowry 16.3 The Autoionization of Water 16.4 The ph Scale 16.5 Strong Balsamic Vinegar

More information

Chapter 7 Acids and Bases

Chapter 7 Acids and Bases Chapter 7 Acids and Bases 7.1 The Nature of Acids and Bases 7.2 Acid Strength 7.3 The ph Scale 7.4 Calculating the ph of Strong Acid Solutions 7.5 Calculating the ph of Weak Acid Solutions 7.6 Bases 7.7

More information

What is an acid? What is a base?

What is an acid? What is a base? What is an acid? What is a base? Properties of an acid Sour taste Turns litmus paper red Conducts electric current Some acids are strong and some are weak Properties of a base Bitter taste Slippery to

More information

UNIT 14 - Acids & Bases

UNIT 14 - Acids & Bases COMMON ACIDS NOTES lactic sour milk, sore muscles acetic vinegar phosphoric soft drinks citric citrus fruits malic apples PROPERTIES OF ACIDS PROPERTIES OF BASES 1. Taste sour 1. Taste bitter 2. react

More information

Chapter 16 Acid-Base Equilibria

Chapter 16 Acid-Base Equilibria Chapter 16 Acid-Base Equilibria Learning goals and key skills: Understand the nature of the hydrated proton, represented as either H + (aq) or H 3 O + (aq) Define and identify Arrhenuis acids and bases.

More information

11/15/11. Chapter 16. HA(aq) + H 2 O(l) H 3 O + (aq) + A (aq) acid base conjugate conjugate

11/15/11. Chapter 16. HA(aq) + H 2 O(l) H 3 O + (aq) + A (aq) acid base conjugate conjugate Chapter 16 Table of Contents Chapter 16 16.1 16.2 16.3 16.4 16.5 16.6 Buffered Solutions Copyright Cengage Learning. All rights reserved 2 Models of Arrhenius: Acids produce H + ions in solution, bases

More information

Section 32 Acids and Bases. Copyright (c) 2011 by Michael A. Janusa, PhD. All rights reserved.

Section 32 Acids and Bases. Copyright (c) 2011 by Michael A. Janusa, PhD. All rights reserved. Section 32 Acids and Bases 1 Copyright (c) 2011 by Michael A. Janusa, PhD. All rights reserved. Acid-Base Concepts Acids and bases are among the most familiar and important of all chemical compounds. You

More information

*In every acid-base reaction, equilibrium favors transfer of a proton from the stronger acid to the stronger base.

*In every acid-base reaction, equilibrium favors transfer of a proton from the stronger acid to the stronger base. 16.2 Bronsted-Lowry Acids and Bases An acid is a substance that can transfer a proton to another substance. A base is a substance that can accept a proton. A proton is a hydrogen ion, H +. Proton transfer

More information

Aqueous Equilibria: Acids and Bases

Aqueous Equilibria: Acids and Bases Slide 1 Chapter 14 Aqueous Equilibria: Acids and Bases Slide 2 Acid Base Concepts 01 Arrhenius Acid: A substance which dissociates to form hydrogen ions (H + ) in solution. HA(aq) H + (aq) + A (aq) Arrhenius

More information

Chapter 13 Acids and Bases

Chapter 13 Acids and Bases William L Masterton Cecile N. Hurley http://academic.cengage.com/chemistry/masterton Chapter 13 Acids and Bases Edward J. Neth University of Connecticut Outline 1. Brønsted-Lowry acid-base model 2. The

More information

Acids and Bases. Dr. Diala Abu-Hassan, DDS, PhD Lecture 2 Nursing First Semester 014. Dr. Diala Abu-Hassan 1

Acids and Bases. Dr. Diala Abu-Hassan, DDS, PhD Lecture 2 Nursing First Semester 014. Dr. Diala Abu-Hassan 1 science.lotsoflessons.com Acids and Bases, DDS, PhD Dr.abuhassand@gmail.com Lecture 2 Nursing First Semester 014 1 Outline Definitions of acids and bases Acid and base strength The dissociation constant

More information

Brønsted-Lowry Acid-Base Model. Chapter 13 Acids and Bases. The Nature of H + Outline. Review from Chapter 4. Conjugate Pairs

Brønsted-Lowry Acid-Base Model. Chapter 13 Acids and Bases. The Nature of H + Outline. Review from Chapter 4. Conjugate Pairs Brønsted-Lowry Acid-Base Model William L Masterton Cecile N. Hurley Edward J. Neth cengage.com/chemistry/masterton Chapter 13 Acids and Bases Brønsted-Lowry Johannes Brønsted (1879-1947) Thomas Lowry (1874-1936)

More information

Chem 105 Tuesday March 8, Chapter 17. Acids and Bases

Chem 105 Tuesday March 8, Chapter 17. Acids and Bases Chem 105 Tuesday March 8, 2011 Chapter 17. Acids and Bases 1) Define Brønsted Acid and Brønsted Base 2) Proton (H + ) transfer reactions: conjugate acid-base pairs 3) Water and other amphiprotic substances

More information

AP Chemistry CHAPTER 16 STUDY GUIDE Acid-Base Equilibrium

AP Chemistry CHAPTER 16 STUDY GUIDE Acid-Base Equilibrium AP Chemistry CHAPTER 16 STUDY GUIDE AcidBase Equilibrium 16.1 Acids and Bases: A Brief Review Acids taste sour and cause certain dyes to change color. Bases taste bitter and feel soapy. Arrhenius concept

More information

Chapter 15: Acids and Bases Arrhenius Definitions:

Chapter 15: Acids and Bases Arrhenius Definitions: Chapter 15: Acids and Bases Arrhenius Definitions: Acids and Bases s - compounds that produce an increase in [H + ] when dissolved in water bases - compounds that produce an increase in [OH ] when dissolved

More information

Chapter 14. Objectives

Chapter 14. Objectives Section 1 Properties of Acids and Bases Objectives List five general properties of aqueous acids and bases. Name common binary acids and oxyacids, given their chemical formulas. List five acids commonly

More information

Chapter 14: Acids and Bases

Chapter 14: Acids and Bases Chapter 14: Acids and Bases 14.1 The Nature of Acids and Bases Bronsted-Lowry Acid-Base Systems Bronsted acid: proton donor Bronsted base: proton acceptor Bronsted acid base reaction: proton transfer from

More information

Chapter 15. Properties of Acids. Structure of Acids 7/3/08. Acid and Bases

Chapter 15. Properties of Acids. Structure of Acids 7/3/08. Acid and Bases Chapter 15 Acid and Bases Properties of Acids! Sour taste! React with active metals! React with carbonates, producing CO 2! Change color of vegetable dyes!blue litmus turns red! React with bases to form

More information

The Arrhenius Definition of Acids & Bases

The Arrhenius Definition of Acids & Bases ACIDS & BASES The Arrhenius Definition of Acids & Bases An acid produces the hydrogen ion in water. A base produces the hydroxide ion in water. Brønsted Lowry Acids & Bases Brønsted acids are proton donors.

More information

CHEMISTRY Matter and Change

CHEMISTRY Matter and Change CHEMISTRY Matter and Change UNIT 18 Table Of Contents Section 18.1 Introduction to Acids and Bases Unit 18: Acids and Bases Section 18.2 Section 18.3 Section 18.4 Strengths of Acids and Bases Hydrogen

More information

Aqueous solutions of acids have a sour Aqueous solutions of bases taste bitter

Aqueous solutions of acids have a sour Aqueous solutions of bases taste bitter Acid and Bases Exam Review Honors Chemistry 3 April 2012 Chapter 14- Acids and Bases Section 14.1- Acid and Base Properties List five general properties of aqueous acids and bases Properties of Acids Properties

More information

CHAPTER Acid & Base

CHAPTER Acid & Base CHAPTER 19 19.1 Acid & Base Common Reactions with Acids Dilute: small amount of solute 1-M Concentrated: large amount of solute Indicator: changes color to show the presence of acids or bases : eat or

More information

Acids and bases, as we use them in the lab, are usually aqueous solutions. Ex: when we talk about hydrochloric acid, it is actually hydrogen chloride

Acids and bases, as we use them in the lab, are usually aqueous solutions. Ex: when we talk about hydrochloric acid, it is actually hydrogen chloride Acids and Bases Acids and bases, as we use them in the lab, are usually aqueous solutions. Ex: when we talk about hydrochloric acid, it is actually hydrogen chloride gas dissolved in water HCl (aq) Concentrated

More information

Unit 10: Acids and Bases

Unit 10: Acids and Bases Unit 10: Acids and Bases PROPERTIES OF ACIDS & BASES Properties of an Acid: a Tastes sour substance which dissociates (ionizes, breaks apart in solution) in water to form hydrogen ions Turns blue litmus

More information

Chem 1046 Lecture Notes Chapter 17

Chem 1046 Lecture Notes Chapter 17 Chem 1046 Lecture Notes Chapter 17 Updated 01-Oct-2012 The Chemistry of Acids and Bases These Notes are to SUPPLIMENT the Text, They do NOT Replace reading the Text Book Material. Additional material that

More information

AP Chemistry Study Guide 8 v Stomach acid and heartburn Ø The cells that line your stomach produce hydrochloric acid To kill unwanted bacteria To

AP Chemistry Study Guide 8 v Stomach acid and heartburn Ø The cells that line your stomach produce hydrochloric acid To kill unwanted bacteria To AP Chemistry Study Guide 8 v Stomach acid and heartburn Ø The cells that line your stomach produce hydrochloric acid To kill unwanted bacteria To help break down food To activate enzymes to break down

More information

CHAPTER 19. Acids, Bases, and Salts Acid Base Theories

CHAPTER 19. Acids, Bases, and Salts Acid Base Theories CHAPTER 19 Acids, Bases, and Salts 19.1 Acid Base Theories ACIDS tart or sour taste Electrolytes Strong acids are corrosive Acid Facts... indicators will change color Blue litmus paper turns pink react

More information

Unit 4a Acids, Bases, and Salts Theory

Unit 4a Acids, Bases, and Salts Theory Unit 4a Acids, Bases, and Salts Theory Chemistry 12 Arrhenius Theory of Acids and Bases The first theory that was proposed to explain the actions of acids and bases was by Svante Arrhenius. It is still

More information

Acid/Base Definitions

Acid/Base Definitions Acids and Bases Acid/Base Definitions Arrhenius Model Acids produce hydrogen ions in aqueous solutions Bases produce hydroxide ions in aqueous solutions Bronsted-Lowry Model Acids are proton donors Bases

More information

ACID-BASE EQUILIBRIA (Part One) A Competition for Protons ADEng. PROGRAMME Chemistry for Engineers Prepared by M. J. McNeil, MPhil.

ACID-BASE EQUILIBRIA (Part One) A Competition for Protons ADEng. PROGRAMME Chemistry for Engineers Prepared by M. J. McNeil, MPhil. ACID-BASE EQUILIBRIA (Part One) A Competition for Protons ADEng. PROGRAMME Chemistry for Engineers Prepared by M. J. McNeil, MPhil. Department of Pure and Applied Sciences Portmore Community College Main

More information

Acids and Bases. Feb 28 4:40 PM

Acids and Bases. Feb 28 4:40 PM Acids and Bases H O s O Cl H O O H H N H Na O H H Feb 28 4:40 PM Properties of Acids 1. Taste sour 2. Conduct electrical current 3. Liberate H 2 gas when reacted with a metal. 4. Cause certain dyes to

More information

Dr. Diala Abu-Hassan, DDS, PhD Lecture 3 MD summer 2014

Dr. Diala Abu-Hassan, DDS, PhD Lecture 3 MD summer 2014 ph, DDS, PhD Dr.abuhassand@gmail.com Lecture 3 MD summer 2014 www.chem4kids.com 1 Outline ph Henderson-Hasselbalch Equation Monoprotic and polyprotic acids Titration 2 Measuring the acidity of solutions,

More information

Chapter 16 ACIDS AND BASES. (Part I) Dr. Al Saadi. Brønsted Acids and Bases

Chapter 16 ACIDS AND BASES. (Part I) Dr. Al Saadi. Brønsted Acids and Bases Chapter 16 ACIDS AND BASES (Part I) Dr. Al Saadi 1 Brønsted Acids and Bases A Brønsted acid is a species that donates a proton. (a proton donor). HCl(aq) + H 2 O(l) H 3 O + (aq) + Cl (aq) acid hydronium

More information

Chapter 14 Properties of Acids and Bases

Chapter 14 Properties of Acids and Bases Section 14.1 Defining Acids and Bases Properties of acids and bases Chapter 14 Properties of Acids and Bases taste sour Acids taste bitter Bases conduct electricity no characteristic feel react with metals

More information

CHAPTER 13: ACIDS & BASES. Section Arrhenius Acid & Bases Svante Arrhenius, Swedish chemist ( ).

CHAPTER 13: ACIDS & BASES. Section Arrhenius Acid & Bases Svante Arrhenius, Swedish chemist ( ). CHAPTER 13: ACIDS & BASES Section 13.1 Arrhenius Acid & Bases Svante Arrhenius, Swedish chemist (1839-1927). He understood that aqueous solutions of acids and bases conduct electricity (they are electrolytes).

More information

ACID-BASE EQUILIBRIA. Chapter 16

ACID-BASE EQUILIBRIA. Chapter 16 P a g e 1 Chapter 16 ACID-BASE EQUILIBRIA Nature of Acids and Bases Before we formally define acids and bases, let s examine their properties. Properties of Acids Sour taste Ability to dissolve many metals

More information

10.1 Acids and Bases in Aqueous Solution

10.1 Acids and Bases in Aqueous Solution 10.1 Acids and Bases in Aqueous Solution Arrhenius Definition of Acids and Bases An acid is a substance that gives hydrogen ions, H +, when dissolved in water. In fact, H + reacts with water and produces

More information

Acids and Bases. Chapters 20 and 21

Acids and Bases. Chapters 20 and 21 Acids and Bases Chapters 20 and 21 Acid and Bases Have a sour taste. Vinegar is a solution of acetic acid. Citrus fruits contain citric acid. React with certain metals to produce hydrogen gas. React with

More information

Common Ion Effect. Segue to Acid-Base Chemistry

Common Ion Effect. Segue to Acid-Base Chemistry Common Ion Effect common ion effect: addition of an ion already present in a solution at equilibrium results in the equilibrium position shifting away from producing more of that ion. HgI 2 (s) º Hg 2+

More information

Acids, Bases and ph Preliminary Course. Steffi Thomas 14/09/2017

Acids, Bases and ph Preliminary Course. Steffi Thomas 14/09/2017 Acids, Bases and ph Preliminary Course Steffi Thomas ssthomas@tcd.ie 14/09/2017 Outline What are acids and bases? Can we provide a general definition of acid and base? How can we quantify acidity and basicity?

More information

Properties of Acids and Bases

Properties of Acids and Bases Chapter 15 Aqueous Equilibria: Acids and Bases Properties of Acids and Bases Generally, an acid is a compound that releases hydrogen ions, H +, into water. Blue litmus is used to test for acids. Blue litmus

More information

1 Chapter 19 Acids, Bases, and Salts

1 Chapter 19 Acids, Bases, and Salts 1 Chapter 19 Acids, Bases, and Salts ACID-BASE THEORIES Acids and bases are all around us and part of our everyday life (ex. bodily functions, vinegar, carbonated drinks, citrus fruits, car batteries,

More information

Objectives. Base Chemistry

Objectives. Base Chemistry May 09, 2014 Objectives AcidAcid Base Chemistry Base Chemistry Chapter 19 Properties of Acids Aqueous solutions of acids taste sour. Change the color of acid/base indicators Many will conduct electrical

More information

Chemistry 102 Chapter 15 ACID-BASE CONCEPTS

Chemistry 102 Chapter 15 ACID-BASE CONCEPTS General Properties: ACID-BASE CONCEPTS ACIDS BASES Taste sour Bitter Change color of indicators Blue Litmus turns red no change Red Litmus no change turns blue Phenolphtalein Colorless turns pink Neutralization

More information

ph calculations MUDr. Jan Pláteník, PhD Brønsted-Lowry concept of acids and bases Acid is a proton donor Base is a proton acceptor

ph calculations MUDr. Jan Pláteník, PhD Brønsted-Lowry concept of acids and bases Acid is a proton donor Base is a proton acceptor ph calculations MUDr. Jan Pláteník, PhD Brønsted-Lowry concept of acids and bases Acid is a proton donor Base is a proton acceptor HCl(aq) + H 2 O(l) H 3 O + (aq) + Cl - (aq) Acid Base Conjugate acid Conjugate

More information

Chapter 10. Acids, Bases, and Salts

Chapter 10. Acids, Bases, and Salts Chapter 10 Acids, Bases, and Salts Topics we ll be looking at in this chapter Arrhenius theory of acids and bases Bronsted-Lowry acid-base theory Mono-, di- and tri-protic acids Strengths of acids and

More information

Acids and Bases. Chapter 11

Acids and Bases. Chapter 11 Acids and Bases Chapter 11 Acids and Bases in our Lives Acids and bases are important substance in health, industry, and the environment. One of the most common characteristics of acids is their sour taste.

More information

Name. Academic Chemistry. Acid Base. Notes. Unit #14 Test Date: cincochem.pbworks.com

Name. Academic Chemistry. Acid Base. Notes. Unit #14 Test Date: cincochem.pbworks.com Periodic Table Name Academic Chemistry Acids & Bases Notes Unit #14 Test Date: 20 cincochem.pbworks.com Acid Base cincochem.pbworks.com Notes Find ph To go from [H 3 O + ] to ph EXAMPLE: [H 3 O + ] = 3.23

More information

What are Acids &Bases?

What are Acids &Bases? Chemistry 481(01) Spring 2013 Instructor: Dr. Upali Siriwardane e-mail: upali@coes.latech.edu Office: CTH 311 Phone 257-4941 Office Hours: 8:00-9:00 a.m. & 11:00-12:00 a.m. M, W; 8:00-10:00 a.m. Tu, Th,

More information

Principles of Reactivity: The Chemistry of Acids and Bases. Acids, Bases and Arrhenius

Principles of Reactivity: The Chemistry of Acids and Bases. Acids, Bases and Arrhenius Principles of Reactivity: The Chemistry of Acids and Bases **a lot of calculations in this chapter will be done on the chalkboard Do not rely on these notes for all the material** Acids, Bases and Arrhenius

More information

Unit 9. Acids, Bases, & Salts Acid/Base Equilibrium

Unit 9. Acids, Bases, & Salts Acid/Base Equilibrium Unit 9 Acids, Bases, & Salts Acid/Base Equilibrium Properties of Acids sour or tart taste strong acids burn; weak acids feel similar to H 2 O acid solutions are electrolytes acids react with most metals

More information

Acids - Bases in Water

Acids - Bases in Water more equilibrium Dr. Fred Omega Garces Chemistry, Miramar College 1 Acids-Bases Characteristics Acids (Properties) Taste Sour Dehydrate Substances Neutralizes bases Dissolves metals Examples: Juices: TJ,

More information

Chapter 10. Acids and Bases

Chapter 10. Acids and Bases Chapter 10 Acids and Bases 1 Properties of Aqueous Solutions of Acids and Bases Aqueous acidic solutions have the following properties: 1. They have a sour taste.. They change the colors of many indicators.

More information

Acid Base Equilibria

Acid Base Equilibria Acid Base Equilibria Acid Ionization, also known as acid dissociation, is the process in where an acid reacts with water to produce a hydrogen ion and the conjugate base ion. HC 2 H 3 O 2(aq) H + (aq)

More information

ADVANCED PLACEMENT CHEMISTRY ACIDS, BASES, AND AQUEOUS EQUILIBRIA

ADVANCED PLACEMENT CHEMISTRY ACIDS, BASES, AND AQUEOUS EQUILIBRIA ADVANCED PLACEMENT CHEMISTRY ACIDS, BASES, AND AQUEOUS EQUILIBRIA Acids- taste sour Bases(alkali)- taste bitter and feel slippery Arrhenius concept- acids produce hydrogen ions in aqueous solution while

More information

AP Chemistry: Acid-Base Chemistry Practice Problems

AP Chemistry: Acid-Base Chemistry Practice Problems Name AP Chemistry: Acid-Base Chemistry Practice Problems Date Due Directions: Write your answers to the following questions in the space provided. For problem solving, show all of your work. Make sure

More information

Chpt 16: Acids and Bases

Chpt 16: Acids and Bases Chpt 16 Acids and Bases Defining Acids Arrhenius: Acid: Substances when dissolved in water increase the concentration of H+. Base: Substances when dissolved in water increase the concentration of OH- Brønsted-Lowry:

More information

Chemical Equilibrium

Chemical Equilibrium Chemical Equilibrium Ch 17 Apr 28 7:40 AM A Reversible reaction is a chemical reaction that can occur in both the forward and the reverse directions N 2 (g) + 3 H 2 (g) 2NH3(g) Apr 16 1:21 PM 1 Equilibrium

More information

8.1 Explaining the Properties of Acids & Bases. SCH4U - Chemistry, Gr. 12, University Prep

8.1 Explaining the Properties of Acids & Bases. SCH4U - Chemistry, Gr. 12, University Prep 8.1 Explaining the Properties of Acids & Bases SCH4U - Chemistry, Gr. 12, University Prep Equilibrium & Acids & Bases 2 So far, we have looked at equilibrium of general chemical systems: We learned about

More information

CH19 Bronsted-Lowry Definitions

CH19 Bronsted-Lowry Definitions CH19 Bronsted-Lowry Definitions 1 BRONSTED-LOWRY DEFINITIONS [Acids] An acid is a substance that can donate H + ions HCl hydrochloric acid HNO 3 nitric acid HOAc acetic acid H 3 0 + hydronium ion NH +

More information

SCH4U Chapter 8 review

SCH4U Chapter 8 review Name: Class: Date: SCH4U Chapter 8 review Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Which statement does not describe a characteristic of acidic

More information