Question 1

What is the hydroxide-ion concentration in a solution formed by combining 200.mL of 0.16 M HCl with 300.mL of 0.091 M NaOH at 25°C?
HCl(aq)+ NaOH(aq)→ NaCl(aq)+ H2O(l)

Accepted Answer

A) 1.6 × 10-13 M 
B) 0.091 M 
C) 1.1 × 10-12 M 
D) 0.055 M 
E) 1.0 × 10-7 M 
A) 1.6 × 10-13 M 
B) 0.091 M 
C) 1.1 × 10-12 M 
D) 0.055 M 
E) 1.0 × 10-7 M

Question 2

Which solution has the highest pH?

Accepted Answer

A) 0.1 M Ba(OH)2 
B) 0.1 M CH3COOH 
C) 0.1 M HCl 
D) 0.1 M NH3 
E) 0.1 M NaOH 
A) 0.1 M Ba(OH)2 
B) 0.1 M CH3COOH 
C) 0.1 M HCl 
D) 0.1 M NH3 
E) 0.1 M NaOH

Question 3

The acid strength decreases in the series HBr > HSO4- > CH3COOH > HCN > HCO3-.Which of the following is the strongest base?

Accepted Answer

A) SO42- 
B) CO32- 
C) CH3COO- 
D) Br- 
E) CN- 
A) SO42- 
B) CO32- 
C) CH3COO- 
D) Br- 
E) CN-

Question 4

What is the hydronium-ion concentration of a 0.0041 M LiOH solution?

Accepted Answer

A) 2.4 × 10-12 M 
B) 4.1 × 10-3 M 
C) 1.0 × 10-14 M 
D) 1.0 × 10-7 M 
E) 4.1 × 10-17 M 
A) 2.4 × 10-12 M 
B) 4.1 × 10-3 M 
C) 1.0 × 10-14 M 
D) 1.0 × 10-7 M 
E) 4.1 × 10-17 M

Question 5

Which of the following statements is true concerning an aqueous solution of the strong acid HBr?

Accepted Answer

A) Br- is a stronger acid than H2O. 
B) Br- is a stronger base than OH-. 
C) H3O+ is a stronger acid than HBr. 
D) H2O is a stronger acid than HBr. 
E) H2O is a stronger base than Br-. 
A) Br- is a stronger acid than H2O. 
B) Br- is a stronger base than OH-. 
C) H3O+ is a stronger acid than HBr. 
D) H2O is a stronger acid than HBr. 
E) H2O is a stronger base than Br-.

Question 6

Consider the following reaction:
AgBr(s)+ 2CN-(aq)→ Ag(CN)2-(aq)+ Br-(aq)
The species that are acting as a Lewis acid and Lewis base,respectively,are

Accepted Answer

A) Br- and CN-. 
B) Ag+ and CN-. 
C) AgBr and Ag(CN)2-. 
D) Ag(CN)2- and Ag+. 
E) Ag+ and Br-. 
A) Br- and CN-. 
B) Ag+ and CN-. 
C) AgBr and Ag(CN)2-. 
D) Ag(CN)2- and Ag+. 
E) Ag+ and Br-.

Question 7

What is the pOH of a 0.033 M HNO3 solution?

Accepted Answer

A) 12.52 
B) 10.59 
C) 15.48 
D) 1.48 
E) 3.41 
A) 12.52 
B) 10.59 
C) 15.48 
D) 1.48 
E) 3.41

Question 8

Which of the following acids has the strongest conjugate base?

Accepted Answer

A) HClO 
B) HClO4 
C) HClO2 
D) HClO3 
E) HCl 
A) HClO 
B) HClO4 
C) HClO2 
D) HClO3 
E) HCl

Question 9

Which of the following species cannot act as a Lewis base?

Accepted Answer

A) NH3 
B) NH4+ 
C) N3- 
D) NH2- 
E) NH2- 
A) NH3 
B) NH4+ 
C) N3- 
D) NH2- 
E) NH2-

Question 10

Which of the following statements is true concerning an aqueous solution of the weak base NH3?

Accepted Answer

A) OH- is a stronger base than NH3. 
B) OH- is a stronger acid than NH4+. 
C) NH4+ is a stronger acid than H3O+. 
D) NH3 is a weaker base than H2O. 
E) H2O is a stronger acid than H3O+. 
A) OH- is a stronger base than NH3. 
B) OH- is a stronger acid than NH4+. 
C) NH4+ is a stronger acid than H3O+. 
D) NH3 is a weaker base than H2O. 
E) H2O is a stronger acid than H3O+.

Question 11

What is the pOH of a solution prepared by dissolving 0.951L of HCl(g),measured at STP,in enough water such that the total volume of the solution is 8.50 L? (R = 0.0821 L · atm/(K · mol))

Accepted Answer

A) 12.628 
B) 7.000 
C) 1.372 
D) 11.698 
E) 2.302 
A) 12.628 
B) 7.000 
C) 1.372 
D) 11.698 
E) 2.302

Question 12

Which of the following statements is correct concerning the neutralization of sulfurous acid by a strong base?
2OH-(aq)+ H2SO3(aq)→ SO32-(aq)+ 2H2O(l)

Accepted Answer

A) H2SO3 is both an Arrhenius acid and a Brønsted-Lowry acid. 
B) H2SO3 is a Brønsted-Lowry acid,but not an Arrhenius acid. 
C) H2SO3 is neither an Arrhenius acid nor a Brønsted-Lowry acid. 
D) H2SO3 is an Arrhenius acid,but not a Brønsted-Lowry acid. 
E) H2SO3 is a Lewis base. 
A) H2SO3 is both an Arrhenius acid and a Brønsted-Lowry acid. 
B) H2SO3 is a Brønsted-Lowry acid,but not an Arrhenius acid. 
C) H2SO3 is neither an Arrhenius acid nor a Brønsted-Lowry acid. 
D) H2SO3 is an Arrhenius acid,but not a Brønsted-Lowry acid. 
E) H2SO3 is a Lewis base.

Question 13

A solution has a pH of 10.20 at 25°C.What is the hydroxide-ion concentration at 25°C?

Accepted Answer

A) 3.8 M 
B) 2.2 × 10-2 M 
C) 1.6 × 10-4 M 
D) 6.3 × 10-11 M 
E) 1.0 × 10-7 M 
A) 3.8 M 
B) 2.2 × 10-2 M 
C) 1.6 × 10-4 M 
D) 6.3 × 10-11 M 
E) 1.0 × 10-7 M

Question 14

Which of the following acids has the weakest conjugate base in aqueous solution?

Accepted Answer

A) CH3COOH 
B) HOCl 
C) HF 
D) HNO2 
E) HNO3 
A) CH3COOH 
B) HOCl 
C) HF 
D) HNO2 
E) HNO3

Question 15

Which of the following statements does not describe a characteristic of an Arrhenius acid?

Accepted Answer

A) An Arrhenius acid reacts with an Arrhenius base to produce a salt. 
B) An Arrhenius acid turns red litmus blue. 
C) An Arrhenius acid is an electrolyte. 
D) An Arrhenius acid reacts with CaCO3 to produce CO2. 
E) An Arrhenius acid tastes sour. 
A) An Arrhenius acid reacts with an Arrhenius base to produce a salt. 
B) An Arrhenius acid turns red litmus blue. 
C) An Arrhenius acid is an electrolyte. 
D) An Arrhenius acid reacts with CaCO3 to produce CO2. 
E) An Arrhenius acid tastes sour.

Question 16

Which of the following solutions has the highest hydroxide-ion concentration?

Accepted Answer

A) 0.1 M HCl 
B) a solution with pH = 5 
C) 0.1 M H2SO4 
D) pure water 
E) a solution with pOH = 12 
A) 0.1 M HCl 
B) a solution with pH = 5 
C) 0.1 M H2SO4 
D) pure water 
E) a solution with pOH = 12

Question 17

The autoionization of water,as represented by the equation below,is known to be endothermic.Which of the following correctly states what occurs as the temperature of water is raised?
H2O(l)+ H2O(l)  
H3O+(aq)+ OH-(aq)

Accepted Answer

A) The pH of the water decreases,and the water becomes more acidic. 
B) The pH of the water decreases,and the water remains neutral. 
C) The pH of the water increases,and the water remains neutral. 
D) The pH of the water does not change,and the water remains neutral. 
E) The pH of the water increases,and the water becomes more acidic. 
A) The pH of the water decreases,and the water becomes more acidic. 
B) The pH of the water decreases,and the water remains neutral. 
C) The pH of the water increases,and the water remains neutral. 
D) The pH of the water does not change,and the water remains neutral. 
E) The pH of the water increases,and the water becomes more acidic.

Question 18

What is the pH of a solution prepared by dissolving 0.241 L of HCl(g),measured at STP,in enough water such that the total volume of the solution is 2.00 L? (R = 0.0821 L · atm/(K · mol))

Accepted Answer

A) 2.270 
B) 11.730 
C) 1.968 
D) 7.000 
E) 12.032 
A) 2.270 
B) 11.730 
C) 1.968 
D) 7.000 
E) 12.032

Question 19

At 25°C,what is the pH of a 10.0 M HNO3 solution?

Accepted Answer

A) 1.000 
B) 0.000 
C) 10.000 
D) -1.000 
E) 14.000 
A) 1.000 
B) 0.000 
C) 10.000 
D) -1.000 
E) 14.000

Question 20

Which of the following species cannot act as a Lewis acid?

Accepted Answer

A) BeCl2 
B) H+ 
C) Ag+ 
D) BF3 
E) NH4+ 
A) BeCl2 
B) H+ 
C) Ag+ 
D) BF3 
E) NH4+

Exam 15: Acids and Bases

What is the hydroxide-ion concentration in a solution formed by combining 200.mL of 0.16 M HCl with 300.mL of 0.091 M NaOH at 25°C? HCl(aq)+ NaOH(aq)→ NaCl(aq)+ H2O(l)

Which solution has the highest pH?

The acid strength decreases in the series HBr > HSO4- > CH3COOH > HCN > HCO3-.Which of the following is the strongest base?

What is the hydronium-ion concentration of a 0.0041 M LiOH solution?

Which of the following statements is true concerning an aqueous solution of the strong acid HBr?

Consider the following reaction: AgBr(s)+ 2CN-(aq)→ Ag(CN)2-(aq)+ Br-(aq) The species that are acting as a Lewis acid and Lewis base,respectively,are

What is the pOH of a 0.033 M HNO3 solution?

Which of the following acids has the strongest conjugate base?

Which of the following species cannot act as a Lewis base?

Which of the following statements is true concerning an aqueous solution of the weak base NH3?

What is the pOH of a solution prepared by dissolving 0.951L of HCl(g),measured at STP,in enough water such that the total volume of the solution is 8.50 L? (R = 0.0821 L · atm/(K · mol))

Which of the following statements is correct concerning the neutralization of sulfurous acid by a strong base? 2OH-(aq)+ H2SO3(aq)→ SO32-(aq)+ 2H2O(l)

A solution has a pH of 10.20 at 25°C.What is the hydroxide-ion concentration at 25°C?

Which of the following acids has the weakest conjugate base in aqueous solution?

Which of the following statements does not describe a characteristic of an Arrhenius acid?

Which of the following solutions has the highest hydroxide-ion concentration?

The autoionization of water,as represented by the equation below,is known to be endothermic.Which of the following correctly states what occurs as the temperature of water is raised? H2O(l)+ H2O(l) H3O+(aq)+ OH-(aq)

What is the pH of a solution prepared by dissolving 0.241 L of HCl(g),measured at STP,in enough water such that the total volume of the solution is 2.00 L? (R = 0.0821 L · atm/(K · mol))

At 25°C,what is the pH of a 10.0 M HNO3 solution?

Which of the following species cannot act as a Lewis acid?

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Filters

What is the hydroxide-ion concentration in a solution formed by combining 200.mL of 0.16 M HCl with 300.mL of 0.091 M NaOH at 25°C? HCl(aq)+ NaOH(aq)→ NaCl(aq)+ H₂O(l)

The acid strength decreases in the series HBr > HSO₄^- > CH₃COOH > HCN > HCO₃^-.Which of the following is the strongest base?

Consider the following reaction: AgBr(s)+ 2CN^-(aq)→ Ag(CN)₂^-(aq)+ Br^-(aq) The species that are acting as a Lewis acid and Lewis base,respectively,are

What is the pOH of a 0.033 M HNO₃ solution?

Which of the following statements is true concerning an aqueous solution of the weak base NH₃?

Which of the following statements is correct concerning the neutralization of sulfurous acid by a strong base? 2OH^-(aq)+ H₂SO₃(aq)→ SO₃^2-(aq)+ 2H₂O(l)

The autoionization of water,as represented by the equation below,is known to be endothermic.Which of the following correctly states what occurs as the temperature of water is raised? H₂O(l)+ H₂O(l) H₃O⁺(aq)+ OH^-(aq)

At 25°C,what is the pH of a 10.0 M HNO₃ solution?