Question 1

Which salt shifts the pH when dissolved in water?

Accepted Answer

A) KCl 
B) Al(NO3)3 
C) NaCl 
D) NaNO3 
A) KCl 
B) Al(NO3)3 
C) NaCl 
D) NaNO3

Question 2

According to the Arrhenius theory,what is produced when an acid dissolves in water?

Accepted Answer

A) H+ 
B) OH- 
C) H3O+ 
D)    
A) H+ 
B) OH- 
C) H3O+ 
D)

Question 3

The salt of a strong acid with a strong base could behave as a buffer.

Accepted Answer

A) True 
 B)False

Question 4

Nitric acid,HNO3,is a weak acid.

Accepted Answer

A) True 
 B)False

Question 5

The reason pure water has a pH of 7 is that there is the same concentration of hydrogen and hydroxide ions on the self-ionization of water.

Accepted Answer

A) True 
 B)False

Question 6

In the Brønsted theory,both acids and bases are defined in terms of how substances lose or gain

Accepted Answer

A) OH-. 
B) H3O+. 
C) H+. 
D) Cl - 
A) OH-. 
B) H3O+. 
C) H+. 
D) Cl -

Question 7

A Brønsted base is a proton donor.

Accepted Answer

A) True 
 B)False

Question 8

A 25.00 mL sample of hydrochloric acid solution,HCl,is titrated with 0.0512 M NaOH solution.The volume of NaOH solution required is 21.68 mL.What is the molarity of the HCl solution?

Accepted Answer

A) 0.0444 
B) 0.0590 
C) 0.0295 
D) 0.0148 
A) 0.0444 
B) 0.0590 
C) 0.0295 
D) 0.0148

Question 9

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 10

In a buffer solution made up of equal concentrations of acetic acid and sodium acetate,NaC2H3O2,which component is used to buffer against added OH - ?

Accepted Answer

A) C2H3O2 
B) Na+ 
C) OH - 
D) HC2H3O2 
A) C2H3O2 
B) Na+ 
C) OH - 
D) HC2H3O2

Question 11

When a strong acid is added to a weak base and mixed,which of the following would not be produced?

Accepted Answer

A) conjugate acid 
B) conjugate base 
C) salt 
D) water 
A) conjugate acid 
B) conjugate base 
C) salt 
D) water

Question 12

According to the Brønsted Theory,a conjugate pair is composed of a Brønsted acid and a Brønsted base.

Accepted Answer

A) True 
 B)False

Question 13

What is the pKa of an acid with a Ka of 1.82* 10-5?

Accepted Answer

A) "4.74" 
B) "-4.74" 
C) "9.26" 
D) "-9.26" 
A) "4.74" 
B) "-4.74" 
C) "9.26" 
D) "-9.26"

Question 14

Most acids are weak acids.

Accepted Answer

A) True 
 B)False

Question 15

A solution for which [OH-] = 3.0 * 10-10 is classified as _____ .

Accepted Answer

A) acidic 
B) basic 
C) neutral 
D) More than one response is correct. 
A) acidic 
B) basic 
C) neutral 
D) More than one response is correct.

Question 16

The molar concentration of OH in a water solution is 1.0 * 10-9.The pH of the solution is _____ .

Accepted Answer

A) 9.00 B) 5.00 C) > 9.00 D) < 5.00 A) 9.00 B) 5.00 C) > 9.00 D) < 5.00

Question 17

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 18

It has been proposed that atmospheric CO2 could be reduced by absorption in to the Earth's oceans.Which of the following reactions would be involved?

Accepted Answer

A) CO2 (g)+ H2O (l)   H2CO3 (aq) 
B) H2CO3 (aq)   H+ (aq)+ HCO3- (aq) 
C) HCO3- (aq)   H+ (aq)+ CO32- (aq) 
D) all of the above 
A) CO2 (g)+ H2O (l)   H2CO3 (aq) 
B) H2CO3 (aq)   H+ (aq)+ HCO3- (aq) 
C) HCO3- (aq)   H+ (aq)+ CO32- (aq) 
D) all of the above

Question 19

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 20

The buffer capacity is the amount of ____ that can be absorbed without causing significant changes in pH.

Accepted Answer

A) acid 
B) base 
C) neither acid or base 
D) either acid or base 
A) acid 
B) base 
C) neither acid or base 
D) either acid or base

Exam 9: Acids, bases, and Salts

Which salt shifts the pH when dissolved in water?

According to the Arrhenius theory,what is produced when an acid dissolves in water?

The salt of a strong acid with a strong base could behave as a buffer.

Nitric acid,HNO3,is a weak acid.

The reason pure water has a pH of 7 is that there is the same concentration of hydrogen and hydroxide ions on the self-ionization of water.

In the Brønsted theory,both acids and bases are defined in terms of how substances lose or gain

A Brønsted base is a proton donor.

A 25.00 mL sample of hydrochloric acid solution,HCl,is titrated with 0.0512 M NaOH solution.The volume of NaOH solution required is 21.68 mL.What is the molarity of the HCl solution?

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

In a buffer solution made up of equal concentrations of acetic acid and sodium acetate,NaC2H3O2,which component is used to buffer against added OH - ?

When a strong acid is added to a weak base and mixed,which of the following would not be produced?

According to the Brønsted Theory,a conjugate pair is composed of a Brønsted acid and a Brønsted base.

What is the pKa of an acid with a Ka of 1.82* 10-5?

Most acids are weak acids.

A solution for which [OH-] = 3.0 * 10-10 is classified as _____ .

The molar concentration of OH in a water solution is 1.0 * 10-9.The pH of the solution is _____ .

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

It has been proposed that atmospheric CO2 could be reduced by absorption in to the Earth's oceans.Which of the following reactions would be involved?

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?

The buffer capacity is the amount of ____ that can be absorbed without causing significant changes in pH.

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

Body Fluids

Filters

Nitric acid,HNO₃,is a weak acid.

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

In a buffer solution made up of equal concentrations of acetic acid and sodium acetate,NaC₂H₃O₂,which component is used to buffer against added OH ^- ?

What is the pK_a of an acid with a K_a of 1.82* 10^-⁵?

A solution for which [OH^-] = 3.0 * 10^-¹⁰ is classified as _____ .

The molar concentration of OH in a water solution is 1.0 * 10^-⁹.The pH of the solution is _____ .

It has been proposed that atmospheric CO₂ could be reduced by absorption in to the Earth's oceans.Which of the following reactions would be involved?