Question 1

Select from the response list for the acid that best fits the description: an acid that has more nonacidic hydrogens than acidic hydrogens.

Accepted Answer

A)  HCl 
B)  HC2H3O2 
C)  H2C3H2O2 
D)  H2SO4 
A)  HCl 
B)  HC2H3O2 
C)  H2C3H2O2 
D)  H2SO4

Question 2

Which of the following statements about weak acids is correct?

Accepted Answer

A)  Weak acids always contain C atoms. 
B)  The percentage dissociation for weak acids is usually in the range of 40-60 percent. 
C)  Weak acid molecules readily lose only a small percentage of their acidic hydrogen atoms. 
D)  More than one correct response. 
E)  No correct response. 
A)  Weak acids always contain C atoms. 
B)  The percentage dissociation for weak acids is usually in the range of 40-60 percent. 
C)  Weak acid molecules readily lose only a small percentage of their acidic hydrogen atoms. 
D)  More than one correct response. 
E)  No correct response.

Question 3

Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices: (1) The total number of hydrogen atoms present in one molecule of an acid is the basis for classifying it as monoprotic, diprotic, triprotic, etc.
(2) In all Bronsted-Lowry acid-base reactions, the acidic species reacts with the basic species to produce water.
(3) A buffer is a solution that experiences zero change in pH when a small amount of acid or base is added to it.

Accepted Answer

A)  All three statements are true. 
B)  Two of the three statements are true. 
C)  Only one of the statements is true. 
D)  None of the statements is true. 
A)  All three statements are true. 
B)  Two of the three statements are true. 
C)  Only one of the statements is true. 
D)  None of the statements is true.

Question 4

For the solution description, select a correct characterization from the response list: [H3O+] = 2.0   10-8 M.

Accepted Answer

A)  an acidic solution 
B)  a basic solution 
C)  a neutral solution 
D)  a buffer solution 
A)  an acidic solution 
B)  a basic solution 
C)  a neutral solution 
D)  a buffer solution

Question 5

In which of the following pairs of substances are both members of the pair salts?

Accepted Answer

A)  NaCl and NaOH 
B)  KNO3 and K2SO4 
C)  H3PO4 and (NH4)3PO4 
D)  more than one correct response 
E)  no correct response 
A)  NaCl and NaOH 
B)  KNO3 and K2SO4 
C)  H3PO4 and (NH4)3PO4 
D)  more than one correct response 
E)  no correct response

Question 6

Select from the response list for the acid that best fits the description: a monoprotic strong acid.

Accepted Answer

A)  HCl 
B)  HC2H3O2 
C)  H2C3H2O2 
D)  H2SO4 
A)  HCl 
B)  HC2H3O2 
C)  H2C3H2O2 
D)  H2SO4

Question 7

If the pH of a salt solution is 5.3, the salt must be one which could be formed from the neutralization of

Accepted Answer

A)  a strong acid and a strong base 
B)  a weak acid and a strong base 
C)  a strong acid and a weak base 
D)  HI and NaOH 
A)  a strong acid and a strong base 
B)  a weak acid and a strong base 
C)  a strong acid and a weak base 
D)  HI and NaOH

Question 8

Select from the response list the compound that best fits the description: a salt whose dissociation produces more positive ions than negative ions.

Accepted Answer

A)  KOH 
B)  NaNO3 
C)  H3PO4 
D)  K3PO4 
A)  KOH 
B)  NaNO3 
C)  H3PO4 
D)  K3PO4

Question 9

Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices: (1) In Arrhenius acid-base theory, the acidic species is the hydronium ion and the basic species is the hydroxide ion.
(2) An amphiprotic substance can function as either a Bronsted-Lowry acid or a Bronsted-Lowry base.
(3) All soluble salts are strong electrolytes.

Accepted Answer

A)  All three statements are true. 
B)  Two of the three statements are true. 
C)  Only one of the statements is true. 
D)  None of the statements is true. 
A)  All three statements are true. 
B)  Two of the three statements are true. 
C)  Only one of the statements is true. 
D)  None of the statements is true.

Question 10

Select from the response list the compound that best fits the description: a substance that reacts with NaOH to produce Na3PO4.

Accepted Answer

A)  KOH 
B)  NaNO3 
C)  H3PO4 
D)  K3PO4 
A)  KOH 
B)  NaNO3 
C)  H3PO4 
D)  K3PO4

Select from the response list for the acid that best fits the description: an acid that has more nonacidic hydrogens than acidic hydrogens.

Which of the following statements about weak acids is correct?

For the solution description, select a correct characterization from the response list: [H₃O⁺] = 2.0 10^-⁸ M.

In which of the following pairs of substances are both members of the pair salts?

Select from the response list for the acid that best fits the description: a monoprotic strong acid.

If the pH of a salt solution is 5.3, the salt must be one which could be formed from the neutralization of

Select from the response list the compound that best fits the description: a salt whose dissociation produces more positive ions than negative ions.

Select from the response list the compound that best fits the description: a substance that reacts with NaOH to produce Na₃PO₄.

Basic Concepts About Matter

Measurements in Chemistry

Atomic Structure and the Periodic Table

Chemical Bonding: the Ionic Bond Model

Chemical Bonding: the Covalent Bond Model

Chemical Calculations: Formula Masses, Moles, and Chemical Equations

Gases, Liquids, and Solids

Solutions

Chemical Reactions

Nuclear Chemistry

Saturated Hydrocarbons

Unsaturated Hydrocarbons

Alcohols, Phenols, and Ethers

Aldehydes and Ketones

Carboxylic Acids, Esters, and Other Acid Derivatives

Amines and Amides

Carbohydrates

Lipids

Proteins

Enzymes and Vitamins

Nucleic Acids

Biochemical Energy Production

Carbohydrate Metabolism

Lipid Metabolism

Protein Metabolism

Filters

Exam 10: Acids, Bases, and Salts

Select from the response list for the acid that best fits the description: an acid that has more nonacidic hydrogens than acidic hydrogens.

Which of the following statements about weak acids is correct?

For the solution description, select a correct characterization from the response list: [H3O+] = 2.0 10-8 M.

In which of the following pairs of substances are both members of the pair salts?

Select from the response list for the acid that best fits the description: a monoprotic strong acid.

If the pH of a salt solution is 5.3, the salt must be one which could be formed from the neutralization of

Select from the response list the compound that best fits the description: a salt whose dissociation produces more positive ions than negative ions.

Select from the response list the compound that best fits the description: a substance that reacts with NaOH to produce Na3PO4.

Basic Concepts About Matter

Measurements in Chemistry

Atomic Structure and the Periodic Table

Chemical Bonding: the Ionic Bond Model

Chemical Bonding: the Covalent Bond Model

Chemical Calculations: Formula Masses, Moles, and Chemical Equations

Gases, Liquids, and Solids

Solutions

Chemical Reactions

Nuclear Chemistry

Saturated Hydrocarbons

Unsaturated Hydrocarbons

Alcohols, Phenols, and Ethers

Aldehydes and Ketones

Carboxylic Acids, Esters, and Other Acid Derivatives

Amines and Amides

Carbohydrates

Lipids

Proteins

Enzymes and Vitamins

Nucleic Acids

Biochemical Energy Production

Carbohydrate Metabolism

Lipid Metabolism

Protein Metabolism

Filters

For the solution description, select a correct characterization from the response list: [H₃O⁺] = 2.0 10^-⁸ M.

Select from the response list the compound that best fits the description: a substance that reacts with NaOH to produce Na₃PO₄.