Question 1

Which of the following acids will have the strongest conjugate base?

Accepted Answer

A) HCl 
B) HClO4 
C) HNO3 
D) HCN 
E) HI 
A) HCl 
B) HClO4 
C) HNO3 
D) HCN 
E) HI

Question 2

What is the conjugate acid of HCO3⁻?

Accepted Answer

A) H3O+ 
B) H2O 
C) CO32- 
D) OH⁻ 
E) H2CO3 
A) H3O+ 
B) H2O 
C) CO32- 
D) OH⁻ 
E) H2CO3

Question 3

Determine the pOH of a 0.116 mol L-1 Ba(OH)2 solution at 25 °C.

Accepted Answer

A) 8.62 
B) 13.06 
C) 13.37 
D) 0.63 
E) 12.56 
A) 8.62 
B) 13.06 
C) 13.37 
D) 0.63 
E) 12.56

Question 4

What is the pH of a 0.020 mol L-1 HClO4 solution?

Accepted Answer

A) 0.020 
B) 0.040 
C) 1.70 
D) 12.30 
A) 0.020 
B) 0.040 
C) 1.70 
D) 12.30

Question 5

Which of the following is the acid found in our stomachs?

Accepted Answer

A) H2SO4 
B) HI 
C) HCl 
D) HF 
E) HBr 
A) H2SO4 
B) HI 
C) HCl 
D) HF 
E) HBr

Question 6

Determine the pOH of a 0.741 mol L-1 KOH solution at 25 °C.

Accepted Answer

A) 0.13 
B) 13.87 
C) 0.17 
D) 12.65 
E) 11.88 
A) 0.13 
B) 13.87 
C) 0.17 
D) 12.65 
E) 11.88

Question 7

A solution with a hydrogen ion concentration of 3.25 × 10-6 mol L-1 is ________ and has a hydroxide ion concentration of ________.

Accepted Answer

A) acidic; 3.08 × 10-8 mol L-1 
B) acidic; 3.08 × 10-9 mol L-1 
C) basic; 3.08 × 10-8 mol L-1 
D) basic; 3.08 × 10-9 mol L-1 
A) acidic; 3.08 × 10-8 mol L-1 
B) acidic; 3.08 × 10-9 mol L-1 
C) basic; 3.08 × 10-8 mol L-1 
D) basic; 3.08 × 10-9 mol L-1

Question 8

On which equilibrium does the strength of an acid HA depend on?

Accepted Answer

A) HA(aq)+ H2O(l)⇌ H2A+(aq)+ OH-(aq) 
B) HA(aq)+ H2O(l)⇌ A-(aq)+ H3O+(aq) 
C) HA(aq)+ H2O(l)⇌ H(HO)A-(aq)+ H+(aq) 
D) HA(aq)+ OH-(aq)⇌ A-(aq)+H2O(l) 
E) HA(aq)+ HA(aq)⇌ H2A+(aq)+ A-(aq) 
A) HA(aq)+ H2O(l)⇌ H2A+(aq)+ OH-(aq) 
B) HA(aq)+ H2O(l)⇌ A-(aq)+ H3O+(aq) 
C) HA(aq)+ H2O(l)⇌ H(HO)A-(aq)+ H+(aq) 
D) HA(aq)+ OH-(aq)⇌ A-(aq)+H2O(l) 
E) HA(aq)+ HA(aq)⇌ H2A+(aq)+ A-(aq)

Question 9

A solution with a hydroxide ion concentration of 4.15 × 10-6 mol L-1 is ________ and has a hydrogen ion concentration of ________.

Accepted Answer

A) acidic, 2.41 × 10-8 mol L-1 
B) acidic, 2.41 × 10-9 mol L-1 
C) basic, 2.41 × 10-8 mol L-1 
D) basic, 2.41 × 10-9 mol L-1 
A) acidic, 2.41 × 10-8 mol L-1 
B) acidic, 2.41 × 10-9 mol L-1 
C) basic, 2.41 × 10-8 mol L-1 
D) basic, 2.41 × 10-9 mol L-1

Question 10

Match the following.

-Arrhenius acid

Accepted Answer

A) proton donor 
B) electron pair acceptor 
C) proton acceptor 
D) electron pair donor 
E) produces protons in aqueous solution
F)produces hydroxide ions in aqueous solution 
A) proton donor 
B) electron pair acceptor 
C) proton acceptor 
D) electron pair donor 
E) produces protons in aqueous solution
F)produces hydroxide ions in aqueous solution

Question 11

Calculate the pH of a 0.60 mol L-1 H2SO3 solution that has the stepwise dissociation constants Ka1 = 1.5 × 10-2 and Ka2 = 6.3 × 10-8.

Accepted Answer

A) 1.02 
B) 1.06 
C) 1.82 
D) 2.04 
A) 1.02 
B) 1.06 
C) 1.82 
D) 2.04

Question 12

Which one of the following will form an acidic solution in water?

Accepted Answer

A) NH4Cl 
B) NaF 
C) LiI 
D) KNO3 
E) NaCH3COO 
A) NH4Cl 
B) NaF 
C) LiI 
D) KNO3 
E) NaCH3COO

Question 13

What is the pH of a 0.40 mol L-1 H2Se solution that has the stepwise dissociation constants Ka1 = 1.3 × 10-4 and Ka2 = 1.0 × 10-11?

Accepted Answer

A) 2.14 
B) 3.89 
C) 4.28 
D) 5.57 
A) 2.14 
B) 3.89 
C) 4.28 
D) 5.57

Question 14

When dissolved in water, which compound is generally considered to be an Arrhenius acid?

Accepted Answer

A) CH3CO2H 
B) NaOH 
C) Na2CO3 
D) CH3CH2OH 
A) CH3CO2H 
B) NaOH 
C) Na2CO3 
D) CH3CH2OH

Question 15

Determine the pOH in a 0.235 mol L-1 NaOH solution.

Accepted Answer

A) 13.76 
B) 0.24 
C) 13.37 
D) 0.63 
E) 12 
A) 13.76 
B) 0.24 
C) 13.37 
D) 0.63 
E) 12

Question 16

What is the pH of a 0.100 mol L-1 NH3 solution that has Kb = 1.8 × 10-5? The equation for the dissociation of NH3 is below:

Accepted Answer

A) 1.87 
B) 2.87 
C) 11.13 
D) 10.13 
A) 1.87 
B) 2.87 
C) 11.13 
D) 10.13

Question 17

Calculate the pH of a solution that contains 3.9 × 10-4 mol L-1 H3O⁺ at 25 °C.

Accepted Answer

A) 4.59 
B) 3.41 
C) 10.59 
D) 9.41 
E) 0.59 
A) 4.59 
B) 3.41 
C) 10.59 
D) 9.41 
E) 0.59

Question 18

What is the pH of a 0.040 mol L-1 Ba(OH)2 solution?

Accepted Answer

A) 1.10 
B) 1.40 
C) 12.60 
D) 12.90 
A) 1.10 
B) 1.40 
C) 12.60 
D) 12.90

Question 19

Determine the pH in a 0.235 mol L-1 NaOH solution.

Accepted Answer

A) 13.76 
B) 0.24 
C) 13.37 
D) 0.63 
E) 12 
A) 13.76 
B) 0.24 
C) 13.37 
D) 0.63 
E) 12

Question 20

Which of the following is a general property of an acid?

Accepted Answer

A) Acids have sour taste. 
B) Acids are not able to dissolve metals. 
C) Acids turn red litmus paper blue. 
D) Acids leave blue litmus paper unchanged. 
E) All acids are dense liquids. 
A) Acids have sour taste. 
B) Acids are not able to dissolve metals. 
C) Acids turn red litmus paper blue. 
D) Acids leave blue litmus paper unchanged. 
E) All acids are dense liquids.

Exam 15: Acids and Bases

Which of the following acids will have the strongest conjugate base?

What is the conjugate acid of HCO3⁻?

Determine the pOH of a 0.116 mol L-1 Ba(OH)2 solution at 25 °C.

What is the pH of a 0.020 mol L-1 HClO4 solution?

Which of the following is the acid found in our stomachs?

Determine the pOH of a 0.741 mol L-1 KOH solution at 25 °C.

A solution with a hydrogen ion concentration of 3.25 × 10-6 mol L-1 is ________ and has a hydroxide ion concentration of ________.

On which equilibrium does the strength of an acid HA depend on?

A solution with a hydroxide ion concentration of 4.15 × 10-6 mol L-1 is ________ and has a hydrogen ion concentration of ________.

Match the following. -Arrhenius acid

Calculate the pH of a 0.60 mol L-1 H2SO3 solution that has the stepwise dissociation constants Ka1 = 1.5 × 10-2 and Ka2 = 6.3 × 10-8.

Which one of the following will form an acidic solution in water?

What is the pH of a 0.40 mol L-1 H2Se solution that has the stepwise dissociation constants Ka1 = 1.3 × 10-4 and Ka2 = 1.0 × 10-11?

When dissolved in water, which compound is generally considered to be an Arrhenius acid?

Determine the pOH in a 0.235 mol L-1 NaOH solution.

What is the pH of a 0.100 mol L-1 NH3 solution that has Kb = 1.8 × 10-5? The equation for the dissociation of NH3 is below:

Calculate the pH of a solution that contains 3.9 × 10-4 mol L-1 H3O⁺ at 25 °C.

What is the pH of a 0.040 mol L-1 Ba(OH)2 solution?

Determine the pH in a 0.235 mol L-1 NaOH solution.

Which of the following is a general property of an acid?

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Filters

What is the conjugate acid of HCO₃⁻?

Determine the pOH of a 0.116 mol L^-1 Ba(OH)₂ solution at 25 °C.

What is the pH of a 0.020 mol L^-1 HClO₄ solution?

Determine the pOH of a 0.741 mol L^-1 KOH solution at 25 °C.

A solution with a hydrogen ion concentration of 3.25 × 10^-6 mol L^-1 is and has a hydroxide ion concentration of .

A solution with a hydroxide ion concentration of 4.15 × 10^-6 mol L^-1 is and has a hydrogen ion concentration of .

Calculate the pH of a 0.60 mol L^-1 H₂SO₃ solution that has the stepwise dissociation constants K_a1 = 1.5 × 10^-2 and K_a2 = 6.3 × 10^-8.

What is the pH of a 0.40 mol L^-1 H₂Se solution that has the stepwise dissociation constants K_a1 = 1.3 × 10^-4 and K_a2 = 1.0 × 10^-11?

Determine the pOH in a 0.235 mol L^-1 NaOH solution.

What is the pH of a 0.100 mol L^-1 NH₃ solution that has K_b = 1.8 × 10^-5? The equation for the dissociation of NH₃ is below:

Calculate the pH of a solution that contains 3.9 × 10^-4 mol L^-1 H₃O⁺ at 25 °C.

What is the pH of a 0.040 mol L^-1 Ba(OH)₂ solution?

Determine the pH in a 0.235 mol L^-1 NaOH solution.