Question 1

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 2

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 3

A solution has a pH of 11.60. The value of [H+] is _____ .

Accepted Answer

A) 2.5 × 10 − 4 
B) 4.0 × 10 − 3 
C) 4.0 × 10 − 11 
D) 2.5 × 10 − 12 
A) 2.5 × 10 − 4 
B) 4.0 × 10 − 3 
C) 4.0 × 10 − 11 
D) 2.5 × 10 − 12

Question 4

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 5

Some salts isolated by evaporation retain water that is called

Accepted Answer

A) water of hydration. 
B) hydroxide. 
C) hydronium. 
D) crystallized water. 
A) water of hydration. 
B) hydroxide. 
C) hydronium. 
D) crystallized water.

Question 6

Antacids contain a substance that neutralizes hydrochloric acid. What is a candidate for use as an antacid?

Accepted Answer

A) Al(NO3)3 
B) MgCl2 
C) Al2(SO4)3 
D) MgCO3 
A) Al(NO3)3 
B) MgCl2 
C) Al2(SO4)3 
D) MgCO3

Question 7

Water is able to act not only as a solvent but as and acid or base.

Accepted Answer

A) True 
 B)False

Question 8

The salt of a weak base with a weak base could behave as a buffer.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following substances could behave as an Arrhenius base?

Accepted Answer

A) Na2CO3 
B) Na3PO4 
C) K2S 
D) KOH 
A) Na2CO3 
B) Na3PO4 
C) K2S 
D) KOH

Question 10

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 11

What is the p K a of an acid with a K a 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 12

The procedure commonly used to determine the amount of base in a solution by adding a measured quantity of acid is called _____ .

Accepted Answer

A) dissociation 
B) titration 
C) ionization 
D) normalization 
A) dissociation 
B) titration 
C) ionization 
D) normalization

Question 13

A Brønsted base is a proton donor.

Accepted Answer

A) True 
 B)False

Question 14

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 15

Sodium nitrate in water will produce a basic solution.

Accepted Answer

A) True 
 B)False

Question 16

Gastroesophageal reflux disease (GERD)is the result of a malfunctioning muscle that allows stomach to enter the esophagus.

Accepted Answer

A) True 
 B)False

Question 17

What are the missing products in the following reaction when it is written as a full equation? 2HBr + SrCO3 → ____ + ____ + 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 18

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 19

Which of the following statements is true for neutral solutions in which water is the solvent?

Accepted Answer

A) Neutral solutions contain no H3O+ ions. 
B) Neutral solutions contain no OH −  ions. 
C) Neutral solutions contain H3O+ and OH −  ions in equal concentrations. 
D) More than one response is correct. 
A) Neutral solutions contain no H3O+ ions. 
B) Neutral solutions contain no OH −  ions. 
C) Neutral solutions contain H3O+ and OH −  ions in equal concentrations. 
D) More than one response is correct.

Question 20

Solutions with a pH less than 7.00 are basic.

Accepted Answer

A) True 
 B)False

Exam 9: Acids, Bases, and Salts

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 − ?

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

A solution has a pH of 11.60. The value of [H+] is _____ .

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

Some salts isolated by evaporation retain water that is called

Antacids contain a substance that neutralizes hydrochloric acid. What is a candidate for use as an antacid?

Water is able to act not only as a solvent but as and acid or base.

The salt of a weak base with a weak base could behave as a buffer.

Which of the following substances could behave as an Arrhenius base?

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

What is the p K a of an acid with a K a of 1.82 × 10 − 5?

The procedure commonly used to determine the amount of base in a solution by adding a measured quantity of acid is called _____ .

A Brønsted base is a proton donor.

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

Sodium nitrate in water will produce a basic solution.

Gastroesophageal reflux disease (GERD)is the result of a malfunctioning muscle that allows stomach to enter the esophagus.

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

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

Which of the following statements is true for neutral solutions in which water is the solvent?

Solutions with a pH less than 7.00 are basic.

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

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⁻?

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

A solution has a pH of 11.60. The value of [H⁺] is _____ .

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

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

What is the p K _a of an acid with a K _a of 1.82 × 10^{− 5}?

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