Question 1

Describe the relationship between molecular structure and acid strength.

Accepted Answer

1. The stronger the bond between a hydro...

Question 2

Identify the monoprotic acid.

Accepted Answer

A)   H2CO3
B)   NH3
C)   H3PO4
D)   H2SO4
E)   HBr

Question 3

What is the pH of a 0.30 mol L-1 pyridine solution that has Kb = 1.9 × 10-9? The equation for the dissociation of pyridine is below: C5H5N(aq) +H2O(l)  ⇌ C5H5NH+(aq) +OH-(aq)

Accepted Answer

A)   4. 62
B)   8.72
C)   9. 38
D)   10. 38

Question 4

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 x 10-8

Accepted Answer

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

Question 5

Find the percent ionization of a 0.400 mol L-1 solution of formic acid. The Ka of formic acid is 1.8 × 10-4.

Accepted Answer

A)   3.4%
B)   2.1%
C)   1.1%
D)   3.5%
E)   4.6%

Question 6

Order the following acids in order of increasing strength: HBrO HBrO3 HBrO4 HBrO2

Accepted Answer

A)   HBrO 3 4 2
B)   HBrO4 3 2 
C)   HBrO 3 2 4
D)   HBrO 2 3 4
E)   HBrO2 4 2

Question 7

What is the difference between a strong and weak acid?

Accepted Answer

A strong acid ionizes/dissocia...

Question 8

Calculate the pH of a 0. 080 mol L-1 carbonic acid solution, H2CO3(aq) , that has the stepwise dissociation constants Ka1 = 4.3 × 10-7 and Ka2 = 5.6 × 10-11.

Accepted Answer

A)   1.10
B)   3.73
C)   6.37
D)   10.25

Question 9

Determine the Ka for CH3NH3⁺ at 25 °C. The Kb for CH3NH2 is 4.4 × 10-4.

Accepted Answer

A)   3.1 × 10-10
B)   6.8 × 10-11
C)   5.6 × 10-10
D)   2.3 × 10-3
E)   2.3 × 10-11

Question 10

Calculate the pH of a solution that contains 7.8 × 10-6 mol L-1 OH⁻ at 25 °C.

Accepted Answer

A)   1.28
B)   5.11
C)   12.72
D)   8.89
E)   9.64

Question 11

Find the percent ionization of a 0.265 mol L-1 HClO solution. The Ka of HClO is 2.9 × 10-8.

Accepted Answer

A)   0.0331%
B)   0.0551%
C)   1.12%
D)   3.65%
E)   3.32%

Question 12

What is the hydroxide ion concentration and the pH for a hydrochloric acid solution that has a hydronium ion concentration of  1.50 x 10-2 mol L-1

Accepted Answer

A)   6.67 × 10-12 mol L-1, 2.82
B)   6.67 × 10-12 mol L-1, 11.18
C)   6.67 × 10-13 mol L-1, 1.82
D)   6.67 × 10-13 mol L-1, 12.17

Question 13

What is the hydroxide ion concentration of a lye solution that has a pH of 9.20?

Accepted Answer

A)   6.3 × 10-10 mol L-1
B)   1.6 × 10-5 mol L-1
C)   4.8 mol L-1
D)   9.2 mol L-1

Question 14

Determine the pH of a 0.188 mol L-1 NH3 solution at 25 °C. The Kb of NH3 is 1.76 × 10-5.

Accepted Answer

A)   5.480
B)   2.740
C)   8.520
D)   11.260
E)   12.656

Question 15

Determine the pH of a 0.461 mol L-1 C6H5CO2H solution if the Ka of C6H5CO2H is 6.5 × 10-5.

Accepted Answer

A)   2.26
B)   4.52
C)   11.74
D)   9.48
E)   5.48

Question 16

Match the following.
-Lewis acid

Accepted Answer

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

Exam 15: Acids and Bases

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 x 10-8

Correct Answer
verified

What is the hydroxide ion concentration of a lye solution that has a pH of 9.20?

Correct Answer
verified

What is the difference between a strong and weak acid?

Correct Answer
verified
A strong acid ionizes/dissocia...
View Answer

Determine the pH of a 0.461 mol L^-1 C₆H₅CO₂H solution if the K_a of C₆H₅CO₂H is 6.5 × 10^-5.

Correct Answer
verified

Order the following acids in order of increasing strength: HBrO HBrO₃ HBrO₄ HBrO₂

Correct Answer
verified

Identify the monoprotic acid.

Correct Answer
verified

Find the percent ionization of a 0.265 mol L^-1 HClO solution. The K_a of HClO is 2.9 × 10^-8.

Correct Answer
verified

Match the following. -Lewis acid

Correct Answer
verified

Describe the relationship between molecular structure and acid strength.

Correct Answer
verified
1. The stronger the bond between a hydro...
View Answer

Determine the pH of a 0.188 mol L^-1 NH₃ solution at 25 °C. The K_bof NH₃ is 1.76 × 10^-5.

Correct Answer
verified

What is the pH of a 0.30 mol L^-1 pyridine solution that has K_b = 1.9 × 10^-9? The equation for the dissociation of pyridine is below: C₅H₅N(aq) +H₂O(l) ⇌ C₅H₅NH+(aq) +OH-(aq)

Correct Answer
verified

What is the hydroxide ion concentration and the pH for a hydrochloric acid solution that has a hydronium ion concentration of 1.50 x 10^-2 mol L^-1

Correct Answer
verified

Calculate the pH of a solution that contains 7.8 × 10^-6 mol L^-1 OH⁻ at 25 °C.

Correct Answer
verified

Determine the K_a for CH₃NH₃⁺ at 25 °C. The K_b for CH₃NH₂ is 4.4 × 10^-4.

Correct Answer
verified

Calculate the pH of a 0. 080 mol L^-1 carbonic acid solution, H₂CO₃₍_aq_{) ,}that has the stepwise dissociation constants K_a1 = 4.3 × 10^-7 and K_a2 = 5.6 × 10^-11.

Correct Answer
verified

Find the percent ionization of a 0.400 mol L^-1 solution of formic acid. The K_a of formic acid is 1.8 × 10^-4.

Correct Answer
verified

Exam 15: Acids and Bases

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 x 10-8

Correct AnswerverifiedShow Answer

What is the hydroxide ion concentration of a lye solution that has a pH of 9.20?

Correct AnswerverifiedShow Answer

What is the difference between a strong and weak acid?

Correct AnswerverifiedA strong acid ionizes/dissocia...View AnswerShow Answer

Determine the pH of a 0.461 mol L-1 C6H5CO2H solution if the Ka of C6H5CO2H is 6.5 × 10-5.

Correct AnswerverifiedShow Answer

Order the following acids in order of increasing strength: HBrO HBrO3 HBrO4 HBrO2

Correct AnswerverifiedShow Answer

Identify the monoprotic acid.

Correct AnswerverifiedShow Answer

Find the percent ionization of a 0.265 mol L-1 HClO solution. The Ka of HClO is 2.9 × 10-8.

Correct AnswerverifiedShow Answer

Match the following. -Lewis acid

Correct AnswerverifiedShow Answer

Describe the relationship between molecular structure and acid strength.

Correct Answerverified1. The stronger the bond between a hydro...View AnswerShow Answer

Determine the pH of a 0.188 mol L-1 NH3 solution at 25 °C. The Kb of NH3 is 1.76 × 10-5.

Correct AnswerverifiedShow Answer

What is the pH of a 0.30 mol L-1 pyridine solution that has Kb = 1.9 × 10-9? The equation for the dissociation of pyridine is below: C5H5N(aq) +H2O(l) ⇌ C5H5NH+(aq) +OH-(aq)

Correct AnswerverifiedShow Answer

What is the hydroxide ion concentration and the pH for a hydrochloric acid solution that has a hydronium ion concentration of 1.50 x 10-2 mol L-1

Correct AnswerverifiedShow Answer

Calculate the pH of a solution that contains 7.8 × 10-6 mol L-1 OH⁻ at 25 °C.

Correct AnswerverifiedShow Answer

Determine the Ka for CH3NH3⁺ at 25 °C. The Kb for CH3NH2 is 4.4 × 10-4.

Correct AnswerverifiedShow Answer

Calculate the pH of a 0. 080 mol L-1 carbonic acid solution, H2CO3(aq) , that has the stepwise dissociation constants Ka1 = 4.3 × 10-7 and Ka2 = 5.6 × 10-11.

Correct AnswerverifiedShow Answer

Find the percent ionization of a 0.400 mol L-1 solution of formic acid. The Ka of formic acid is 1.8 × 10-4.

Correct AnswerverifiedShow Answer

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 x 10-8

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
A strong acid ionizes/dissocia...
View Answer

Determine the pH of a 0.461 mol L^-1 C₆H₅CO₂H solution if the K_a of C₆H₅CO₂H is 6.5 × 10^-5.

Correct Answer
verified

Order the following acids in order of increasing strength: HBrO HBrO₃ HBrO₄ HBrO₂

Correct Answer
verified

Correct Answer
verified

Find the percent ionization of a 0.265 mol L^-1 HClO solution. The K_a of HClO is 2.9 × 10^-8.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
1. The stronger the bond between a hydro...
View Answer

Determine the pH of a 0.188 mol L^-1 NH₃ solution at 25 °C. The K_bof NH₃ is 1.76 × 10^-5.

Correct Answer
verified

What is the pH of a 0.30 mol L^-1 pyridine solution that has K_b = 1.9 × 10^-9? The equation for the dissociation of pyridine is below: C₅H₅N(aq) +H₂O(l) ⇌ C₅H₅NH+(aq) +OH-(aq)

Correct Answer
verified

What is the hydroxide ion concentration and the pH for a hydrochloric acid solution that has a hydronium ion concentration of 1.50 x 10^-2 mol L^-1

Correct Answer
verified

Calculate the pH of a solution that contains 7.8 × 10^-6 mol L^-1 OH⁻ at 25 °C.

Correct Answer
verified

Determine the K_a for CH₃NH₃⁺ at 25 °C. The K_b for CH₃NH₂ is 4.4 × 10^-4.

Correct Answer
verified

Calculate the pH of a 0. 080 mol L^-1 carbonic acid solution, H₂CO₃₍_aq_{) ,}that has the stepwise dissociation constants K_a1 = 4.3 × 10^-7 and K_a2 = 5.6 × 10^-11.

Correct Answer
verified

Find the percent ionization of a 0.400 mol L^-1 solution of formic acid. The K_a of formic acid is 1.8 × 10^-4.

Correct Answer
verified