Question 1

The pH of a solution of baking soda,NaHCO3,would be expected to be above 7.

Accepted Answer

A) True 
 B)False

Question 2

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

Accepted Answer

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

Question 3

Identify the substance with the lowest pH.

Accepted Answer

A)  orange juice 
B)  household ammonia 
C)  baking soda,NaHCO3 
D)  milk 
A)  orange juice 
B)  household ammonia 
C)  baking soda,NaHCO3 
D)  milk

Question 4

Identify two Brønsted base(s)in the reaction.
HIO3 (aq)+ H2O (I)  
H3O+ (aq)+ 103- (aq)

Accepted Answer

A)  HIO3,H2O 
B)  HIO3, H3O+ 
C)  HIO3,IO3- 
D)  H2O,IO3- 
A)  HIO3,H2O 
B)  HIO3, H3O+ 
C)  HIO3,IO3- 
D)  H2O,IO3-

Question 5

The term,strong acid,refers to

Accepted Answer

A)  the number of hydrogens attached to the acid molecule. 
B)  the speed at which it will dissolve metal. 
C)  if it will cause burns to the skin. 
D)  the ability for the acid to completely dissociate in solution. 
A)  the number of hydrogens attached to the acid molecule. 
B)  the speed at which it will dissolve metal. 
C)  if it will cause burns to the skin. 
D)  the ability for the acid to completely dissociate in solution.

Question 6

The classification of an acid or base as weak or strong is based upon

Accepted Answer

A)  the solubility of the acid or base. 
B)  the extent of dissociation of the acid or base. 
C)  the concentration of acid or base in solution. 
D)  More than one response is correct. 
A)  the solubility of the acid or base. 
B)  the extent of dissociation of the acid or base. 
C)  the concentration of acid or base in solution. 
D)  More than one response is correct.

Question 7

Seageroic acid has a pKa of 8.23,whereas slabaughic acid has a pKa 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 8

Which of the following sets of reactants could be used to prepare CaI2?

Accepted Answer

A)  CaO and HI 
B)  Ca(OH)2 and HI 
C)  Ca and HI 
D)  Any of these could be used. 
A)  CaO and HI 
B)  Ca(OH)2 and HI 
C)  Ca and HI 
D)  Any of these could be used.

Question 9

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 10

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 11

Phosphoric acid,H3PO4,undergoes three dissociation reactions.Which of the three acids is the weakest?

Accepted Answer

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

Question 12

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 13

What are the missing products in the following reaction when it is written as a full equation?
2HBr + SrCO3 $\rarr$____ + ____ + H2O

Accepted Answer

A)  SrBr2 + CO2 
B)  SrBr2 +
  
C)  Sr2 + H2CO3 
D)  HBr + CO2 
A)  SrBr2 + CO2 
B)  SrBr2 +
  
C)  Sr2 + H2CO3 
D)  HBr + CO2

Question 14

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 15

If a solution of acetic acid (a weak acid)is titrated with NaOH solution,what will be the pH at the equivalence point?

Accepted Answer

A)  higher than 7 
B)  lower than 7 
C)  equal to 7 
D)  can't predict 
A)  higher than 7 
B)  lower than 7 
C)  equal to 7 
D)  can't predict

Question 16

A higher pH corresponds to _____ .

Accepted Answer

A)  a higher [H+] 
B)  a lower [H+] 
C)  no change in [OH+] 
D)  a lower [OH-] 
A)  a higher [H+] 
B)  a lower [H+] 
C)  no change in [OH+] 
D)  a lower [OH-]

Question 17

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 18

The goals of an acid/base titration is to reach neutrality.

Accepted Answer

A) True 
 B)False

Question 19

KOH is a strong base.

Accepted Answer

A) True 
 B)False

Question 20

NaCl is an example of a good buffer.

Accepted Answer

A) True 
 B)False

Exam 9: Acids,bases,and Salts

The pH of a solution of baking soda,NaHCO3,would be expected to be above 7.

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

Identify the substance with the lowest pH.

Identify two Brønsted base(s)in the reaction. HIO3 (aq)+ H2O (I) H3O+ (aq)+ 103- (aq)

The term,strong acid,refers to

The classification of an acid or base as weak or strong is based upon

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

Which of the following sets of reactants could be used to prepare CaI2?

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

Phosphoric acid,H3PO4,undergoes three dissociation reactions.Which of the three acids is the weakest?

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

What are the missing products in the following reaction when it is written as a full equation? 2HBr + SrCO3 →\rarr→ ____ + ____ + H2O

Which of the following is a property of acid solutions?

If a solution of acetic acid (a weak acid)is titrated with NaOH solution,what will be the pH at the equivalence point?

A higher pH corresponds to _____ .

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

The goals of an acid/base titration is to reach neutrality.

KOH is a strong base.

NaCl is an example of a good buffer.

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

The pH of a solution of baking soda,NaHCO₃,would be expected to be above 7.

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

Identify two Brønsted base(s)in the reaction. HIO₃ (aq)+ H₂O (I) H₃O⁺ (aq)+ 10₃^- (aq)

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

Which of the following sets of reactants could be used to prepare CaI₂?

Phosphoric acid,H₃PO₄,undergoes three dissociation reactions.Which of the three acids is the weakest?

What are the missing products in the following reaction when it is written as a full equation? 2HBr + SrCO₃ $\rarr$ + + H₂O

The molar concentration of H⁺ ions in a solution is 5.8 *10^-⁹.The pH is _____ .