Question 1

Which pair below cannot have a Brønsted-Lowry acid base reaction between them?

Accepted Answer

A) OH- and NH 
B) PO43- and ClO- 
C) HCO3- and SO32- 
D) HClO4 and HNO2 
E) HSO4- and HCl 
A) OH- and NH 
B) PO43- and ClO- 
C) HCO3- and SO32- 
D) HClO4 and HNO2 
E) HSO4- and HCl

Question 2

What is the conjugate acid of HPO42-(aq)?

Accepted Answer

A) H3PO4(aq) 
B) HPO42-(aq) 
C) H2PO4-(aq) 
D) PO43-(aq) 
E) H3O+(aq) 
A) H3PO4(aq) 
B) HPO42-(aq) 
C) H2PO4-(aq) 
D) PO43-(aq) 
E) H3O+(aq)

Question 3

A solution is made by dissolving 12.50 g of NaOH,a strong base,in water to produce 2.0 liters of solution.What is the pH of this solution?

Accepted Answer

A) 13.50 
B) 13.19 
C) 11.74 
D) 0.81 
E) 0.31 
A) 13.50 
B) 13.19 
C) 11.74 
D) 0.81 
E) 0.31

Question 4

Which is the correct net ionic equation for the reaction between HC2O4- and HPO42-? (Note:
H2C2O4 is a stronger acid than H2PO4-.)

Accepted Answer

A) HC2O4- + HPO42-   H+ + H2O42- + HPO42- 
B) HC2O4- + HPO42-   H+ + HC2O4- + PO43- 
C) HC2O4- + HPO42-   C2O42- + H2PO4- 
D) HC2O4- + HPO42-   H2C2O4 + PO43- 
E) HC2O4- + HPO42-   H2 + C2O42- + PO43- 
A) HC2O4- + HPO42-   H+ + H2O42- + HPO42- 
B) HC2O4- + HPO42-   H+ + HC2O4- + PO43- 
C) HC2O4- + HPO42-   C2O42- + H2PO4- 
D) HC2O4- + HPO42-   H2C2O4 + PO43- 
E) HC2O4- + HPO42-   H2 + C2O42- + PO43-

Question 5

Which of the following is a Lewis acid but not a Brønsted-Lowry acid?

Accepted Answer

A) OH- 
B) HPO42- 
C) HCl 
D) NH4+ 
E) Fe3+ 
A) OH- 
B) HPO42- 
C) HCl 
D) NH4+ 
E) Fe3+

Question 6

A substance that can act as both a proton source and a proton remover is called:

Accepted Answer

A) a Brønsted-Lowry acid 
B) a Lewis acid 
C) amphibious 
D) amphoteric 
E) neither an acid nor a base 
A) a Brønsted-Lowry acid 
B) a Lewis acid 
C) amphibious 
D) amphoteric 
E) neither an acid nor a base

Question 7

Consider the following generalized reaction.   For this reaction,which of the following is correct?

Accepted Answer

A) A is proton source. 
B) B is a proton remover. 
C) A is an electron pair donor. 
D) B is an electron pair acceptor. 
E) This a Lewis acid-base reaction. 
A) A is proton source. 
B) B is a proton remover. 
C) A is an electron pair donor. 
D) B is an electron pair acceptor. 
E) This a Lewis acid-base reaction.

Question 8

Which of the following is a characteristic property traditionally associated with an Arrhenius acid?

Accepted Answer

A) Turns litmus indicator blue 
B) Feels slippery 
C) Tastes bitter 
D) Sour taste 
E) Contain OH- ions 
A) Turns litmus indicator blue 
B) Feels slippery 
C) Tastes bitter 
D) Sour taste 
E) Contain OH- ions

Question 9

Consider the following image which depicts the reactants in an acid-base reaction.Atoms other than H are labeled with the element symbol.   The products of this reaction are shown below.   Which of the following is a correct interpretation of this reaction?

Accepted Answer

A) 1 and 2 are a conjugate acid-base pair. 
B) 3 and 4are a conjugate acid-base pair. 
C) 1 and 4 are a conjugate acid-base pair. 
D) 2 and 4 are a conjugate acid-base pair. 
E) 1 and 3 are a conjugate acid-base pair. 
A) 1 and 2 are a conjugate acid-base pair. 
B) 3 and 4are a conjugate acid-base pair. 
C) 1 and 4 are a conjugate acid-base pair. 
D) 2 and 4 are a conjugate acid-base pair. 
E) 1 and 3 are a conjugate acid-base pair.

Question 10

Given the following relative base strengths,starting with the weakest: 
HSO3- - 2H3O2-,what is the relative strength of each conjugate acid,starting with the weakest?

Accepted Answer

A) HC2H3O2 2SO3 
B) HC2H3O2 2SO3 2SO3 2H3O2 
D) H2SO3 2H3O2 2SO3 2H3O2 
A) HC2H3O2 2SO3 
B) HC2H3O2 2SO3 2SO3 2H3O2 
D) H2SO3 2H3O2 2SO3 2H3O2

Question 11

Which of the following solutions is most acidic?

Accepted Answer

A) [H+] = 1 × 10-4 
B) [H+] = 1 × 10-14 
C) [OH-] = 1 × 10-3 
D) pH = 10 
E) pOH = 12 
A) [H+] = 1 × 10-4 
B) [H+] = 1 × 10-14 
C) [OH-] = 1 × 10-3 
D) pH = 10 
E) pOH = 12

Question 12

Which of the following conforms to the Arrhenius definition of an acid?

Accepted Answer

A) H2O(   ) 
B) HBrO3(aq) 
C) HCO3-(aq) 
D) Al3+(aq) 
E) Mg(OH)2(s) 
A) H2O(   ) 
B) HBrO3(aq) 
C) HCO3-(aq) 
D) Al3+(aq) 
E) Mg(OH)2(s)

Question 13

A solution has a hydroxide ion concentration of 1 × 10-11 M.What is the pH of the solution,and is it acidic or basic?

Accepted Answer

A) pH = 11, basic 
B) pH = 3, basic 
C) pH = 3, acidic 
D) pH = -11 acidic 
E) pH = -11, basic 
A) pH = 11, basic 
B) pH = 3, basic 
C) pH = 3, acidic 
D) pH = -11 acidic 
E) pH = -11, basic

Question 14

A Brønsted-Lowry acid is defined as a(n):

Accepted Answer

A) proton remover 
B) electron source 
C) proton source 
D) electron pair remover 
E) electron pair source 
A) proton remover 
B) electron source 
C) proton source 
D) electron pair remover 
E) electron pair source

Question 15

Consider a general comparison between acid-base and redox reactions.Which of the following is correct?

Accepted Answer

A) The acid-base analog of a reducing agent is an acid. 
B) The acid-base analog of an oxidizing agent is a base. 
C) The acid-base analog of electrons are protons. 
D) All of the above represent correct comparisons. 
A) The acid-base analog of a reducing agent is an acid. 
B) The acid-base analog of an oxidizing agent is a base. 
C) The acid-base analog of electrons are protons. 
D) All of the above represent correct comparisons.

Question 16

Which of the following cannot act as a Brønsted-Lowry acid?

Accepted Answer

A) HCO3-(aq) 
B) HOH(   ) 
C) NH3(g) 
D) CO32-(aq) 
E) CH3OH(   ) 
A) HCO3-(aq) 
B) HOH(   ) 
C) NH3(g) 
D) CO32-(aq) 
E) CH3OH(   )

Question 17

What is the conjugate base of ammonia?

Accepted Answer

A) NH3(g) 
B) NH4+(aq) 
C) NH4OH(aq) 
D) NH2-(aq) 
E) OH-(aq) 
A) NH3(g) 
B) NH4+(aq) 
C) NH4OH(aq) 
D) NH2-(aq) 
E) OH-(aq)

Question 18

What is the hydrogen ion concentration in a solution with pH = 11.27? Is the solution acidic or basic?

Accepted Answer

A) 5.4 × 10-12 M basic 
B) 1.86 × 10-3 M basic 
C) 5.37 × 10-12 M acidic 
D) 1.86 × 10-3 M acidic 
E) 2.73 M acidic 
A) 5.4 × 10-12 M basic 
B) 1.86 × 10-3 M basic 
C) 5.37 × 10-12 M acidic 
D) 1.86 × 10-3 M acidic 
E) 2.73 M acidic

Question 19

Which of the following is the correct net ionic equation for the reaction between nitrous acid and hydrogen sulfide ion?

Accepted Answer

A) HNO2 + HS-   H2NO2+ + S2- 
B) HNO2 + HS-   NO2- + H2S 
C) HNO2 + HSO4-   H2NO2+ + SO42- 
D) HNO2 + HSO4-   NO2- + H2SO4 
E) HNO3 + HSO4-   NO3- + H2SO4 
A) HNO2 + HS-   H2NO2+ + S2- 
B) HNO2 + HS-   NO2- + H2S 
C) HNO2 + HSO4-   H2NO2+ + SO42- 
D) HNO2 + HSO4-   NO2- + H2SO4 
E) HNO3 + HSO4-   NO3- + H2SO4

Question 20

In Brønsted-Lowry acid-base reactions,which of the following species are favored at equilibrium?

Accepted Answer

A) The weaker acid and the weaker base 
B) The weaker acid and the stronger base 
C) The stronger acid and the weaker base 
D) The stronger acid and the stronger base 
E) At equilibrium, neither side is favored 
A) The weaker acid and the weaker base 
B) The weaker acid and the stronger base 
C) The stronger acid and the weaker base 
D) The stronger acid and the stronger base 
E) At equilibrium, neither side is favored

Exam 17: Acidbase Proton Transferreactions

Which pair below cannot have a Brønsted-Lowry acid base reaction between them?

What is the conjugate acid of HPO42-(aq)?

A solution is made by dissolving 12.50 g of NaOH,a strong base,in water to produce 2.0 liters of solution.What is the pH of this solution?

Which is the correct net ionic equation for the reaction between HC2O4- and HPO42-? (Note: H2C2O4 is a stronger acid than H2PO4-.)

Which of the following is a Lewis acid but not a Brønsted-Lowry acid?

A substance that can act as both a proton source and a proton remover is called:

Consider the following generalized reaction. For this reaction,which of the following is correct?

Which of the following is a characteristic property traditionally associated with an Arrhenius acid?

Consider the following image which depicts the reactants in an acid-base reaction.Atoms other than H are labeled with the element symbol. The products of this reaction are shown below. Which of the following is a correct interpretation of this reaction?

Given the following relative base strengths,starting with the weakest: HSO3- < F- < C2H3O2-,what is the relative strength of each conjugate acid,starting with the weakest?

Which of the following solutions is most acidic?

Which of the following conforms to the Arrhenius definition of an acid?

A solution has a hydroxide ion concentration of 1 × 10-11 M.What is the pH of the solution,and is it acidic or basic?

A Brønsted-Lowry acid is defined as a(n):

Consider a general comparison between acid-base and redox reactions.Which of the following is correct?

Which of the following cannot act as a Brønsted-Lowry acid?

What is the conjugate base of ammonia?

What is the hydrogen ion concentration in a solution with pH = 11.27? Is the solution acidic or basic?

Which of the following is the correct net ionic equation for the reaction between nitrous acid and hydrogen sulfide ion?

In Brønsted-Lowry acid-base reactions,which of the following species are favored at equilibrium?

Matter and Energy

Measurement and Chemical Calculations

Introduction to Gases

Atomic Theory: The Nuclear Model of the Atom

Chemical Nomenclature

Chemical Formula Relationships

Chemical Reactions

Chemical Change

Quantity Relationships in Chemical Reactions

Atomic Theory: The Quantum Model of the Atom

Chemical Bonding

Structure and Shape

The Ideal Gas Law and Its Applications

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Filters

What is the conjugate acid of HPO₄^2-(aq)?

Which is the correct net ionic equation for the reaction between HC₂O₄^- and HPO₄^2-? (Note: H₂C₂O₄ is a stronger acid than H₂PO₄^-.)

Given the following relative base strengths,starting with the weakest: HSO₃^- < F^- < C₂H₃O₂^-,what is the relative strength of each conjugate acid,starting with the weakest?

A solution has a hydroxide ion concentration of 1 × 10^-11 M.What is the pH of the solution,and is it acidic or basic?