Question 1

During a field trip to study the problem of acid rain, you test one lake that had observed a major fish kill.  It was found to have a pH of 5.37.  What is the [H+]?

Accepted Answer

A) 2.3 × 10-9 
B) 3.7 × 10-5 
C) 4.3 × 10-6 
D) 1.7 × 105 
A) 2.3 × 10-9 
B) 3.7 × 10-5 
C) 4.3 × 10-6 
D) 1.7 × 105

Question 2

The expression for the K a of the weak acid HF would be which of the following?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 3

The molar concentration of H+ ions in a solution is 5.8 × 10 − 9. The pH is _____ .

Accepted Answer

A) 9.00 
B) 5.80 
C) between 8.00 and 9.00 
D) between 9.00 and 10.00 
A) 9.00 
B) 5.80 
C) between 8.00 and 9.00 
D) between 9.00 and 10.00

Question 4

Consider the following list of p K a values for a series of acids.  Which is the strongest acid?

Accepted Answer

A) 5.74 
B) 3.21 
C) 10.6 
D) Cannot be determined. 
A) 5.74 
B) 3.21 
C) 10.6 
D) Cannot be determined.

Question 5

The pH of blood must remain stable between 7.35 and 7.45. One of the blood components is the bicarbonate ion,   . Bicarbonate takes part in two reactions that are: 
   (aq)     (aq)+   (aq)       (aq)+   (aq)
 This set of equations indicates that this system is a good candidate to act as a buffer system used to hold the pH of blood reasonably stable.

Accepted Answer

A) True 
 B)False

Question 6

Identify the Brønsted acid(s)in the reaction. HIO3(aq)+ H2O (l)   H3O+ (aq)+ IO3- (aq)

Accepted Answer

A) HIO3 
B) HIO3 and H3O+ 
C) H2O 
D) H2O and HIO3 
A) HIO3 
B) HIO3 and H3O+ 
C) H2O 
D) H2O and HIO3

Question 7

A patient comes to you suffering from a battery acid burn (sulfuric acid). What is the best thing to use to neutralize the acid, while you continue to run cool water over the affected area?

Accepted Answer

A) a 1 M sodium hydroxide solution (NaOH) 
B) a 1 M sodium bicarbonate solution (NaHCO3) 
C) a 1 M acetic acid solution (CH3COOH) 
D) a 1 M carbonic acid solution (H2CO3) 
A) a 1 M sodium hydroxide solution (NaOH) 
B) a 1 M sodium bicarbonate solution (NaHCO3) 
C) a 1 M acetic acid solution (CH3COOH) 
D) a 1 M carbonic acid solution (H2CO3)

Question 8

Seageroic acid has a p K a of 8.23, whereas slabaughic acid has a p K a of 18.65.  From these facts, which of the following is true?

Accepted Answer

A) Slabaughic acid is less water soluble than seageroic acid. 
B) Seageroic acid is a stronger acid than slabaughic acid. 
C) Slabaughic acid dissociates to a greater extent in water. 
D) Seageroic acid is a weaker acid than slabaughic acid. 
A) Slabaughic acid is less water soluble than seageroic acid. 
B) Seageroic acid is a stronger acid than slabaughic acid. 
C) Slabaughic acid dissociates to a greater extent in water. 
D) Seageroic acid is a weaker acid than slabaughic acid.

Question 9

A 10-8 M solution of HCl is prepared.  It would be expected to be _____.

Accepted Answer

A) basic 
B) acidic 
C) neutral 
D) insufficient information 
A) basic 
B) acidic 
C) neutral 
D) insufficient information

Question 10

Which of the following is a property of acid solutions?

Accepted Answer

A) sour taste 
B) slippery feel 
C) change red litmus to blue 
D) More than one response is correct. 
A) sour taste 
B) slippery feel 
C) change red litmus to blue 
D) More than one response is correct.

Question 11

The dissociation reaction for the weak acid, H2PO3- would be which of the following?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 12

Which of the following would you expect to be a weak electrolyte?

Accepted Answer

A) acetic acid 
B) sodium acetate 
C) water 
D) More than one answer is correct. 
A) acetic acid 
B) sodium acetate 
C) water 
D) More than one answer is correct.

Question 13

A reaction in which an acid and a base react completely, leaving only a salt and water, is referred to as a(n)

Accepted Answer

A) hydrolysis reaction. 
B) neutralization reaction. 
C) oxidation reaction. 
D) None of the choices. 
A) hydrolysis reaction. 
B) neutralization reaction. 
C) oxidation reaction. 
D) None of the choices.

Question 14

Identify all Brønsted base(s)in the reaction. N3- (aq)+ H2O (l)   HN3 (aq)+ OH- (aq)

Accepted Answer

A) H2O 
B)    
C) OH- 
D)    and OH- 
A) H2O 
B)    
C) OH- 
D)    and OH-

Question 15

Most acids are weak acids.

Accepted Answer

A) True 
 B)False

Question 16

When your liver detoxifies ethyl alcohol, the concentration of the hydrogen ion increases. This will result in

Accepted Answer

A) respiratory acidosis. 
B) metabolic acidosis. 
C) respiratory alkalosis. 
D) metabolic alkalosis. 
A) respiratory acidosis. 
B) metabolic acidosis. 
C) respiratory alkalosis. 
D) metabolic alkalosis.

Question 17

The cation (positive ion)in a salt comes from _____ .

Accepted Answer

A) an acid 
B) a base 
C) either an acid or a base 
D) water 
A) an acid 
B) a base 
C) either an acid or a base 
D) water

Question 18

The pH of household ammonia is expected to be above 7 because household ammonia is NH4OH.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following mixtures would represent a buffer?

Accepted Answer

A) sodium chloride\hydrochloric acid 
B) sodium sulfate\sulfuric acid 
C) sodium formate\formic acid 
D) none of these 
A) sodium chloride\hydrochloric acid 
B) sodium sulfate\sulfuric acid 
C) sodium formate\formic acid 
D) none of these

Question 20

A solution for which [H+] = 1.0 × 10 − 3 will have a pH of _____ .

Accepted Answer

A) 5.00 
B) 3.00 
C) − 5.00 
D) − 9.00 
A) 5.00 
B) 3.00 
C) − 5.00 
D) − 9.00

Exam 9: Acids, Bases, and Salts

During a field trip to study the problem of acid rain, you test one lake that had observed a major fish kill. It was found to have a pH of 5.37. What is the [H+]?

The expression for the K a of the weak acid HF would be which of the following?

The molar concentration of H+ ions in a solution is 5.8 × 10 − 9. The pH is _____ .

Consider the following list of p K a values for a series of acids. Which is the strongest acid?

Identify the Brønsted acid(s)in the reaction. HIO3(aq)+ H2O (l) H3O+ (aq)+ IO3- (aq)

A patient comes to you suffering from a battery acid burn (sulfuric acid). What is the best thing to use to neutralize the acid, while you continue to run cool water over the affected area?

Seageroic acid has a p K a of 8.23, whereas slabaughic acid has a p K a of 18.65. From these facts, which of the following is true?

A 10-8 M solution of HCl is prepared. It would be expected to be _____.

Which of the following is a property of acid solutions?

The dissociation reaction for the weak acid, H2PO3- would be which of the following?

Which of the following would you expect to be a weak electrolyte?

A reaction in which an acid and a base react completely, leaving only a salt and water, is referred to as a(n)

Identify all Brønsted base(s)in the reaction. N3- (aq)+ H2O (l) HN3 (aq)+ OH- (aq)

Most acids are weak acids.

When your liver detoxifies ethyl alcohol, the concentration of the hydrogen ion increases. This will result in

The cation (positive ion)in a salt comes from _____ .

The pH of household ammonia is expected to be above 7 because household ammonia is NH4OH.

Which of the following mixtures would represent a buffer?

A solution for which [H+] = 1.0 × 10 − 3 will have a pH of _____ .

Matter, Measurements, and Calculations

Atoms and Molecules

Electronic Structure and the Periodic Law

Forces Between Particles

Chemical Reactions

The States of Matter

Solutions and Colloids

Reaction Rates and Equilibrium

Radioactivity and Nuclear Processes

Organic Compounds: Alkanes

Unsaturated Hydrocarbons

Alcohols, Phenols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Esters

Amines and Amides

Carbohydrates

Lipids

Proteins

Enzymes

Nucleic Acids and Protein Synthesis

Nutrition and Energy for Life

Carbohydrate Metabolism

Lipid and Amino Acid Metabolism

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Filters

During a field trip to study the problem of acid rain, you test one lake that had observed a major fish kill. It was found to have a pH of 5.37. What is the [H⁺]?

The expression for the K _a of the weak acid HF would be which of the following?

The molar concentration of H⁺ ions in a solution is 5.8 × 10^{− 9}. The pH is _____ .

Consider the following list of p K _a values for a series of acids. Which is the strongest acid?

Identify the Brønsted acid(s)in the reaction. HIO₃(aq)+ H₂O (l) H₃O⁺ (aq)+ IO₃^- (aq)

Seageroic acid has a p K _a of 8.23, whereas slabaughic acid has a p K _a of 18.65. From these facts, which of the following is true?

A 10^-8 M solution of HCl is prepared. It would be expected to be _____.

The dissociation reaction for the weak acid, H₂PO₃^- would be which of the following?

Identify all Brønsted base(s)in the reaction. N₃^- (aq)+ H₂O (l) HN₃ (aq)+ OH^- (aq)

The pH of household ammonia is expected to be above 7 because household ammonia is NH₄OH.

A solution for which [H⁺] = 1.0 × 10^{− 3} will have a pH of _____ .