Name. Academic Chemistry. Acids & Bases. Homework EC

Transcription

1 Name Academic Chemistry Acids & Bases Homework On-Time LATE DATE ASSIGNMENT EC In theory there is no difference between theory and practice. In practice there is. Yogi Berra cincochem.pbworks.com

2 WARMUP Unit 14 Day 1 Day 2 Day 3 Day 4 2 cincochem.pbworks.com Acid Base

3 Acids and Bases Homework Identify each property as acid (A), a base (B), or both (C). exhibits a sour taste exhibits a bitter taste feels slippery to the touch an electrolyte reacts with metals to produce hydrogen gas turns red litmus paper blue turns blue litmus paper red 2. Name or provide the formula for these acids and bases. Acid Name Acid Formula Base Name Base Formula H 2 Se magnesium hydroxide HClO 3 Al(OH) 3 sulfurous acid hydrobromic acid hydroiodic acid barium hydroxide iron (II) hydroxide strontium hydroxide HNO 2 LiOH 3. What are the 3 strong binary acids?,, and. 4. What are the 4 strong ternary acids? Acid Base cincochem.pbworks.com 3

4 Homework 14.1 Acids and Bases 5. How do you determine if a base is strong or weak? 6. Label the following as strong acid (SA), weak acid (WA), strong base (SB), or weak base (WB): HCl H 2 CO 3 NaOH Be(OH) 2 HClO 3 H 3 PO 3 HF HNO 3 H 2 SO 4 4 cincochem.pbworks.com Acid Base

5 Acid and Base Theory Homework Each of the following unbalanced equations represents a reaction between an Arrhenius acid and an Arrhenius base. Circle the Arrhenius acid and Box the Arrhenius base. You will only mark on the reactant side! a. H 2 CO 3 + NH 4 OH (NH 4 ) 2 CO 3 + H 2 O b. KOH + H 3 PO 4 K 3 PO 4 + H 2 O c. HF + NaOH NaF + H 2 O d. Ba(OH) 2 + HNO 2 Ba(NO 2 ) 2 + H 2 O 2. Complete the following tables. B-L Acid Conjugate Base B-L Base Conjugate Acid HI CN -1 NH 4 +1 O -2 H 2 CO 3 C 2 H 3 O 2-1 HNO 3 NH 3 3. For each reaction draw an arrow between conjugate pairs AND Label each reactant and each product in these equations as a Brønsted-Lowry acid, Brønsted-Lowry base, conjugate acid or conjugate base. a. HNO 3 (aq) + H 2 O (l) NO 3 - (aq) + H 3 O + (aq) Acid Base cincochem.pbworks.com 5

6 Homework 14.2 Acid and Base Theory b. H 2 S (aq) + H 2 O (l) HS - (aq) + H 3 O + (aq) c. NH 3 (aq) + H 2 O (l) NH 4 + (aq) + OH - (aq) 4. A acid has 1 hydrogen atom. An example is HNO A acid has 2 hydrogen atoms. An example is H 2 S. 6. A acid has 3 hydrogen atoms. An example is H 3 PO 4. 6 cincochem.pbworks.com Acid Base

7 ph and poh Homework [ ] means. 2. ph = poh = 3. Identify each of the following as being an acid, base, or neutral solution. a. ph = 4.8 b. ph = 9.0 c. ph = Given the following ph values, find the poh for each solution: a. ph = 10.5 poh = b. ph = 11.2 poh = c. ph = 4.75 poh = d. ph = 6.9 poh = 5. Given the following [H 3 O + ] values, determine the ph and the poh of each solution: a. [H 3 O + ] = 1.0 x 10 2 ph poh b. [H 3 O + ] = 1.0 x 10 5 ph poh c. [H 3 O + ] = 1.0 x 10 3 ph poh d. [H 3 O + ] = 1.0 x 10 4 ph poh Acid Base cincochem.pbworks.com 7

8 Homework 14.3 ph and poh 6. Given the following ph values, determine the [H 3 O + ] and the poh for each solution: a. ph = 4.8 [H 3 O + ] poh = b. ph = 12.1 [H 3 O + ] poh = c. ph = 7.2 [H 3 O + ] poh = d. ph = 5.0 [H 3 O + ] poh = 7. Complete the following table. ph poh [H 3 O + ] Acid/Base Neutral cincochem.pbworks.com Acid Base

9 Neutralization and Titration Homework Write complete balanced equations for these acid-base reactions. a. H 2 SO 4 (aq) + KOH (aq) b. HCl (aq) + LiOH (aq) c. H 3 PO 4 (aq) + Ca(OH) 2 (aq) d. HNO 3 (aq) + Mg(OH) 2 (aq) 2. What is the concentration (molarity) of NaOH if 20.0 ml of the solution is neutralized by 28.0 ml of 1.00 M HCl? 3. How many ml of 1.00 M H 3 PO 4 would be required to neutralize 20.0 ml of 2.61 M LiOH? Acid Base cincochem.pbworks.com 9

10 Homework 14.4 Neutralization and Titration 4. How many ml of a M KOH solution will neutralize 15 ml of a 0.40 M HCl solution? 5. Calculate the molarity of a HNO 3 solution if it takes ml of the acid to neutralize 65.0 ml of a 2.50 M NaOH solution. 6. If 40.8 ml of a 2.0 M HCl solution are needed to neutralize 60.0 ml of NaOH, what is the molarity of the base? 10 cincochem.pbworks.com Acid Base

11 Unit 14 Notes Acid Base cincochem.pbworks.com 11

12 Notes Unit cincochem.pbworks.com Acid Base

13 Unit 14 Extra Credit Puzzle V E B Y W P N S U G K L T X O K X F S G D E T A R U T A S R E P U S O L V E N T U K T J D T E W I Q P K X W T F Z B D F H E Z F X U V R E N P L A V Q T V E J C R H D N O I T A Z I L A R T U E N U N H N Q S K D O I L L O C E C U J O G G B Y K S K A K Y P B I I A B W I I L C M C V E K J L D N R G D C W N B T D Q M Q K F K T I S K L Q R T R O M U O P K N B M K U U U W Y G A I K I U L S Q F W P C N H S P U V W I O P N H O J O Q Z D M Q F J X Y Z Y N N H E V S O L U B I L I T Y W E T U L O S G Y E S A V L S A U M Q V A Y L D V C O Q T L P O L R J K S G V S K J J S A R M U N H I C V T X I T E Q O J K X L D D L I T M U S P A P E R D I C V I E Y Q I N D I C A T O R Y L A Z J L W I H Y D R O X I D E I O N X W V D U Q U J Q R Q I Y B S V S F E V W G V S X X G G W B R C O N B Q P F B H X K V P L C Y Acid Base cincochem.pbworks.com 13

14 Extra Credit Clues Unit 14 ACID ACIDRAIN BASE COLLIOD DILUTESOLUTION HYDROGENION HYDROXIDEION INDICATOR LITMUSPAPER NEUTRALIZATION PHSCALE REACTION SALT SATURATED SOLUBILITY SOLUTE SOLUTION SOLVENT SUPERSATURATED WATER 14 cincochem.pbworks.com Acid Base

15 Unit 14 Extra Credit Puzzle Day 5 Day 6 Day 7 Day 8 Acid Base cincochem.pbworks.com 15

16 Periodic Table Unit cincochem.pbworks.com Acid Base