Question 1

The strong acid HA is added to water. Which of the following is the strongest base in the system?

Accepted Answer

A)   A-
B)   HA
C)   H3O+
D)   H2A-
E)   H2OF) A) and B)
G) C) and E)

Question 2

If Ka for HCN is 6.2 × 10-10, what is Kb for CN-? a for HCN is 6.2 × 10-10, what is Kb for CN-?   A)  6.2 × 10-24 B)  6.2 × 104 C)  1.6 × 10-5 D)  1.6 × 1023 E)  none of these" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   6.2 × 10-24
B)   6.2 × 104
C)   1.6 × 10-5
D)   1.6 × 1023
E)   none of theseF) A) and B)
G) A) and C)

Question 3

​Which of the following is true of Arrhenius concept of acids and bases?

Accepted Answer

A)   ​Acids produce hydroxide ions in aqueous solution and bases produce hydrogen ions.
B)   ​Acids and bases are proton (H+)  donors.
C)   ​Acids are proton (H+)  acceptors and bases are proton donors.
D)   Acids produce hydrogen ions in aqueous solution and bases produce hydroxide ions.
E)   ​Acids are electron donors and bases are electron acceptors.F) All of the above
G) C) and D)

Question 4

For a neutral solution, it must be true that

Accepted Answer

A)   pH = 7.00.
B)   [H+] = [OH-].
C)   [H2O] = 1 × 10-14
D)   [H+] = 0 M.
E)   At least two of these must be true.F) D) and E)
G) B) and E)

Question 5

Calculate the pH of a 1.8 M solution of HNO3.

Accepted Answer

A)   -0.59
B)   -0.26
C)   14.26
D)   13.74
E)   0.26F) All of the above
G) C) and D)

Question 6

​The pH of a 0.010 M weak acid solution is 5.28. Calculate Ka for this acid.

Accepted Answer

A)   1.9​×10-9
B)   ​2.8×10-9
C)   ​5.3×10-6
D)   ​3.6×10-16
E)   ​5.3×10-8F) C) and D)
G) D) and E)

Exam 7: Acids and Bases

The strong acid HA is added to water. Which of the following is the strongest base in the system?

Correct Answer
verified

Calculate the pH of a 1.8 M solution of HNO₃.

Correct Answer
verified

If K_a for HCN is 6.2 × 10^-10, what is K_b for CN^-?

Correct Answer
verified

For a neutral solution, it must be true that

Correct Answer
verified

Which of the following is true of Arrhenius concept of acids and bases?

Correct Answer
verified

The pH of a 0.010 M weak acid solution is 5.28. Calculate K_a for this acid.

Correct Answer
verified

Exam 7: Acids and Bases

The strong acid HA is added to water. Which of the following is the strongest base in the system?

Correct AnswerverifiedShow Answer

Calculate the pH of a 1.8 M solution of HNO3.

Correct AnswerverifiedShow Answer

If Ka for HCN is 6.2 × 10-10, what is Kb for CN-?

Correct AnswerverifiedShow Answer

For a neutral solution, it must be true that

Correct AnswerverifiedShow Answer

​Which of the following is true of Arrhenius concept of acids and bases?

Correct AnswerverifiedShow Answer

​The pH of a 0.010 M weak acid solution is 5.28. Calculate Ka for this acid.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Calculate the pH of a 1.8 M solution of HNO₃.

Correct Answer
verified

If K_a for HCN is 6.2 × 10^-10, what is K_b for CN^-?

Correct Answer
verified

Correct Answer
verified

Which of the following is true of Arrhenius concept of acids and bases?

Correct Answer
verified

The pH of a 0.010 M weak acid solution is 5.28. Calculate K_a for this acid.

Correct Answer
verified