Question 1

List the species present in order of increasing concentration in a 0.1 M solution of H2S.

Accepted Answer

A) H2S - 2-  
B) H2S 2- -  
C) S2- - 2S 
D) HS- 2- 2S 
E) S2- 2S -  
A) H2S - 2-  
B) H2S 2- -  
C) S2- - 2S 
D) HS- 2- 2S 
E) S2- 2S -

Question 2

Which of the following is not an attribute of a base?

Accepted Answer

A) It provides OH- ions in aqueous solution. 
B) It is an electrolyte. 
C) It reacts with some organic dyes to cause them to change color. 
D) It has the ability to neutralize acids. 
E) It tastes sour. 
A) It provides OH- ions in aqueous solution. 
B) It is an electrolyte. 
C) It reacts with some organic dyes to cause them to change color. 
D) It has the ability to neutralize acids. 
E) It tastes sour.

Question 3

When the following reaction goes in the reverse direction (from products to reactants), what is the base? HF(aq) + H2O(l) ⇌ F-(aq) + H3O+(aq)

Accepted Answer

A) HF 
B) H2O 
C) F-  
D) H3O+  
E) both F- and H3O+  
A) HF 
B) H2O 
C) F-  
D) H3O+  
E) both F- and H3O+

Question 4

Select the solution below that is the most basic.

Accepted Answer

A) [OH-] = 1.0 x 10-10 M 
B) [OH-] = 1.0 x 10-4 M 
C) [H3O+] = 1.0 x 10-6 M 
D) [H3O+] = 1.0 x 10-7 M 
E) [H3O+] = 1.0 x 10-9 M 
A) [OH-] = 1.0 x 10-10 M 
B) [OH-] = 1.0 x 10-4 M 
C) [H3O+] = 1.0 x 10-6 M 
D) [H3O+] = 1.0 x 10-7 M 
E) [H3O+] = 1.0 x 10-9 M

Question 5

The substance HNO3(aq) is:

Accepted Answer

A) a strong acid. 
B) a weak acid. 
C) a strong base. 
D) a weak base. 
E) neither an acid nor a base. 
A) a strong acid. 
B) a weak acid. 
C) a strong base. 
D) a weak base. 
E) neither an acid nor a base.

Question 6

Calculate the pH of a solution that has [OH-] = 1.0 ´ 10-6 M.

Accepted Answer

A) pH = 1.00 
B) pH = 7.00 
C) pH = 6.00 
D) pH = 8.00 
E) pH = 14.00 
A) pH = 1.00 
B) pH = 7.00 
C) pH = 6.00 
D) pH = 8.00 
E) pH = 14.00

Question 7

All of the following species are weak bases except:

Accepted Answer

A) NaCN(aq) 
B) K2CO3(aq) 
C) KOH(aq) 
D) CH3NH2(aq) 
E) NH3(aq) 
A) NaCN(aq) 
B) K2CO3(aq) 
C) KOH(aq) 
D) CH3NH2(aq) 
E) NH3(aq)

Question 8

The H3O+ concentration in a 0.010 M solution of NaOH is 0.010 M.

Accepted Answer

A) True 
 B)False

Question 9

The indicator phenol red changes from yellow to red between pH 6.8 and pH 8.4.If phenol red is added to a solution, and the solution turns red, then

Accepted Answer

A) the solution is basic, and the pH must be at or below 7.0. 
B) the pH of the solution must be below 6.8, and the solution is basic. 
C) the pH of the solution must be below 6.8, and the solution is acidic. 
D) the pH of the solution must be above 8.4, and the solution is basic. 
E) the pH of the solution is above 8.4, and the solution is acidic. 
A) the solution is basic, and the pH must be at or below 7.0. 
B) the pH of the solution must be below 6.8, and the solution is basic. 
C) the pH of the solution must be below 6.8, and the solution is acidic. 
D) the pH of the solution must be above 8.4, and the solution is basic. 
E) the pH of the solution is above 8.4, and the solution is acidic.

Question 10

If the pOH of an orange juice sample is 10.38, what is the H3O+ concentration in the orange juice?

Accepted Answer

A) 10.M 
B) 2.4 x 10-4 M 
C) 2.4 x 10-10 M 
D) 4.2 x 10-11 M 
E) 3.6 M 
A) 10.M 
B) 2.4 x 10-4 M 
C) 2.4 x 10-10 M 
D) 4.2 x 10-11 M 
E) 3.6 M

Question 11

If Na2HPO4 is added to water, what other compound could also be added in order to make a buffered solution?

Accepted Answer

A) H3PO4  
B) NaHPO4  
C) NaH2PO4  
D) Na2PO3  
E) none of these is correct 
A) H3PO4  
B) NaHPO4  
C) NaH2PO4  
D) Na2PO3  
E) none of these is correct

Question 12

Which of the following is not an attribute of an acid?

Accepted Answer

A) It provides H+ ions in aqueous solution. 
B) It is a nonelectrolyte. 
C) It tastes sour. 
D) It reacts with some organic dyes to cause them to change color. 
E) It reacts with active metals. 
A) It provides H+ ions in aqueous solution. 
B) It is a nonelectrolyte. 
C) It tastes sour. 
D) It reacts with some organic dyes to cause them to change color. 
E) It reacts with active metals.

Question 13

The indicator phenolphthalein changes from colorless to pink between pH 8.2 and pH 10.If phenolphthalein is added to a solution, and the solution remains colorless, then

Accepted Answer

A) the solution is acidic, and the pH must be at or below 7.0. 
B) the pH of the solution must be below 8.2, and the solution is basic. 
C) the pH of the solution must be below 8.2, but the solution could be either acidic or basic. 
D) the pH of the solution must be above 10, and the solution is basic. 
E) the pH of the solution is above 10, and the solution is acidic. 
A) the solution is acidic, and the pH must be at or below 7.0. 
B) the pH of the solution must be below 8.2, and the solution is basic. 
C) the pH of the solution must be below 8.2, but the solution could be either acidic or basic. 
D) the pH of the solution must be above 10, and the solution is basic. 
E) the pH of the solution is above 10, and the solution is acidic.

Question 14

List the acid, base, conjugate acid, and conjugate base, in that order, for the following reaction: CH3CO2H(aq) + H2O(l) ⇌ CH3CO2-(aq) + H3O+(aq)

Accepted Answer

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

Question 15

Given an OH- concentration of 1.0 ´ 10-4 M, calculate the H3O+ concentration, and then identify the solution as acidic, basic, or neutral.

Accepted Answer

A) [H3O+] = 1.0 x 10-7, neutral 
B) [H3O+] = 1.0 x 10-4, acidic 
C) [H3O+] = 1.0 x 10-10, acidic 
D) [H3O+] = 1.0 x 10-10, basic 
E) [H3O+] = 1.0 x 10-4, basic 
A) [H3O+] = 1.0 x 10-7, neutral 
B) [H3O+] = 1.0 x 10-4, acidic 
C) [H3O+] = 1.0 x 10-10, acidic 
D) [H3O+] = 1.0 x 10-10, basic 
E) [H3O+] = 1.0 x 10-4, basic

Question 16

What is the pH of a 0.015 M HNO3 solution?

Accepted Answer

A) 0.015 
B) 1.82 
C) 7.00 
D) 12.18 
E) -1.82 
A) 0.015 
B) 1.82 
C) 7.00 
D) 12.18 
E) -1.82

Question 17

If the pOH of a borax solution is 4.55, what is the H3O+ concentration in the borax solution?

Accepted Answer

A) 4.6 M 
B) 3.5 x 10-9 M 
C) 3.5 x 10-10 M 
D) 3.5 x 10-11 M 
E) 9.4 M 
A) 4.6 M 
B) 3.5 x 10-9 M 
C) 3.5 x 10-10 M 
D) 3.5 x 10-11 M 
E) 9.4 M

Question 18

The substance NaOH(aq) is:

Accepted Answer

A) a strong acid. 
B) a weak acid. 
C) a strong base. 
D) a weak base. 
E) neither an acid nor a base. 
A) a strong acid. 
B) a weak acid. 
C) a strong base. 
D) a weak base. 
E) neither an acid nor a base.

Question 19

The bicarbonate ion, HCO3-, is amphoteric.What are the conjugate acid and conjugate base of HCO3-?

Accepted Answer

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

Question 20

Calculate the H3O+ concentration in 0.10 M NaOH.

Accepted Answer

A) 1.0 x 10-1 M 
B) 1.0 x 10-2 M 
C) 1.0 x 1013 M 
D) 1.0 x 10-12 M 
E) 1.0 x 10-13 M 
A) 1.0 x 10-1 M 
B) 1.0 x 10-2 M 
C) 1.0 x 1013 M 
D) 1.0 x 10-12 M 
E) 1.0 x 10-13 M

List the species present in order of increasing concentration in a 0.1 M solution of H₂S.

Which of the following is not an attribute of a base?

When the following reaction goes in the reverse direction (from products to reactants), what is the base? HF(aq) + H₂O(l) ⇌ F^-(aq) + H₃O⁺(aq)

Select the solution below that is the most basic.

The substance HNO₃(aq) is:

Calculate the pH of a solution that has [OH^-] = 1.0 ´ 10^-6M.

All of the following species are weak bases except:

The H₃O⁺concentration in a 0.010 M solution of NaOH is 0.010 M.

The indicator phenol red changes from yellow to red between pH 6.8 and pH 8.4.If phenol red is added to a solution, and the solution turns red, then

If the pOH of an orange juice sample is 10.38, what is the H₃O⁺ concentration in the orange juice?

If Na₂HPO₄ is added to water, what other compound could also be added in order to make a buffered solution?

Which of the following is not an attribute of an acid?

The indicator phenolphthalein changes from colorless to pink between pH 8.2 and pH 10.If phenolphthalein is added to a solution, and the solution remains colorless, then

List the acid, base, conjugate acid, and conjugate base, in that order, for the following reaction: CH₃CO₂H(aq) + H₂O(l) ⇌ CH₃CO₂^-(aq) + H₃O⁺(aq)

Given an OH^- concentration of 1.0 ´ 10^-4 M, calculate the H₃O⁺concentration, and then identify the solution as acidic, basic, or neutral.

What is the pH of a 0.015 M HNO₃ solution?

If the pOH of a borax solution is 4.55, what is the H₃O⁺ concentration in the borax solution?

The substance NaOH(aq) is:

The bicarbonate ion, HCO₃^-, is amphoteric.What are the conjugate acid and conjugate base of HCO₃^-?

Calculate the H₃O⁺ concentration in 0.10 M NaOH.

Matter and Energy

Atoms, Ions, and the Periodic Table

Chemical Compounds

Chemical Composition

Chemical Reactions and Equations

Quantities in Chemical Reactions

Electron Structure of the Atom

Chemical Bonding

The Gaseous State

The Liquid and Solid States

Solutions

Reaction Rates and Chemical Equilibrium

Oxidation-Reduction Reactions

Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters

Exam 13: Acids and Bases

List the species present in order of increasing concentration in a 0.1 M solution of H2S.

Which of the following is not an attribute of a base?

When the following reaction goes in the reverse direction (from products to reactants), what is the base? HF(aq) + H2O(l) ⇌ F-(aq) + H3O+(aq)

Select the solution below that is the most basic.

The substance HNO3(aq) is:

Calculate the pH of a solution that has [OH-] = 1.0 ´ 10-6 M.

All of the following species are weak bases except:

The H3O+ concentration in a 0.010 M solution of NaOH is 0.010 M.

The indicator phenol red changes from yellow to red between pH 6.8 and pH 8.4.If phenol red is added to a solution, and the solution turns red, then

If the pOH of an orange juice sample is 10.38, what is the H3O+ concentration in the orange juice?

If Na2HPO4 is added to water, what other compound could also be added in order to make a buffered solution?

Which of the following is not an attribute of an acid?

The indicator phenolphthalein changes from colorless to pink between pH 8.2 and pH 10.If phenolphthalein is added to a solution, and the solution remains colorless, then

List the acid, base, conjugate acid, and conjugate base, in that order, for the following reaction: CH3CO2H(aq) + H2O(l) ⇌ CH3CO2-(aq) + H3O+(aq)

Given an OH- concentration of 1.0 ´ 10-4 M, calculate the H3O+ concentration, and then identify the solution as acidic, basic, or neutral.

What is the pH of a 0.015 M HNO3 solution?

If the pOH of a borax solution is 4.55, what is the H3O+ concentration in the borax solution?

The substance NaOH(aq) is:

The bicarbonate ion, HCO3-, is amphoteric.What are the conjugate acid and conjugate base of HCO3-?

Calculate the H3O+ concentration in 0.10 M NaOH.

Matter and Energy

Atoms, Ions, and the Periodic Table

Chemical Compounds

Chemical Composition

Chemical Reactions and Equations

Quantities in Chemical Reactions

Electron Structure of the Atom

Chemical Bonding

The Gaseous State

The Liquid and Solid States

Solutions

Reaction Rates and Chemical Equilibrium

Oxidation-Reduction Reactions

Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters

List the species present in order of increasing concentration in a 0.1 M solution of H₂S.

When the following reaction goes in the reverse direction (from products to reactants), what is the base? HF(aq) + H₂O(l) ⇌ F^-(aq) + H₃O⁺(aq)

The substance HNO₃(aq) is:

Calculate the pH of a solution that has [OH^-] = 1.0 ´ 10^-6M.

The H₃O⁺concentration in a 0.010 M solution of NaOH is 0.010 M.

If the pOH of an orange juice sample is 10.38, what is the H₃O⁺ concentration in the orange juice?

If Na₂HPO₄ is added to water, what other compound could also be added in order to make a buffered solution?

List the acid, base, conjugate acid, and conjugate base, in that order, for the following reaction: CH₃CO₂H(aq) + H₂O(l) ⇌ CH₃CO₂^-(aq) + H₃O⁺(aq)

Given an OH^- concentration of 1.0 ´ 10^-4 M, calculate the H₃O⁺concentration, and then identify the solution as acidic, basic, or neutral.

What is the pH of a 0.015 M HNO₃ solution?

If the pOH of a borax solution is 4.55, what is the H₃O⁺ concentration in the borax solution?

The bicarbonate ion, HCO₃^-, is amphoteric.What are the conjugate acid and conjugate base of HCO₃^-?

Calculate the H₃O⁺ concentration in 0.10 M NaOH.