Multiple Choice
|
|
|
1.
|
What is the pH of a 0.050 M LiOH solution?
A) | 11.00 | B) | 1.30 | C) | 12.70 | D) | 3.00 |
|
|
|
2.
|
If the pH of a solution has increased from 2.0 to 4.0, the
[H3O+]
A) | decreases by a factor of 10 | B) | increases by a factor of
100 | C) | increases by a factor of 2 | D) | decreases by a factor of
100 |
|
|
|
3.
|
Which of the following is NOT an acid-base conjugate pair?
A) | HCl and Cl– | B) | H2O and
OH– | C) | SO42– and
SO32– | D) | HCO3– and
CO22– |
|
|
|
4.
|
Which of the follwing is amphoteric in an aqueous solution?
|
|
|
5.
|
Based on the reactions below, determine the relative acid strengths (strongest
to weakest). HCl (aq) + H 2O (l) 
H 3O + (aq) + Cl – (aq) HCN (aq) + H 2O (l)
 H 3O + (aq) +
CN – (aq) A) | H3O+ > HCl > HCN | B) | HCl > HCN >
H3O+ | C) | HCN > H3O+ >
HCl | D) | HCl > H3O+ > HCN |
|
|
|
6.
|
Which of the following statements is correct given the equilibrium shown
below: H 3PO 4 (aq) +
NO 2– (aq) 
H 2PO 4– (aq) + HNO 2 (aq) A) | H3PO4 is a stronger acid than
HNO2 | B) | NO2– is a weaker base than
H2PO4– | C) | H3PO4 is a weaker acid
than HNO2 | D) | H2PO4–
anion is a stronger acid than HNO2 |
|
|
|
7.
|
Which of the following pairs has the weaker acid listed first?
A) | HI and HCl | B) | CH3COOH and
CH2BrCOOH | C) | HClO3 and
HClO2 | D) | HNO3 and HNO2 |
|
|
|
8.
|
What is the [OH–]for a solution that has a pH of
4.29?
A) | 1.4 x 10–2 M | B) | 7.3 x 10–13
M | C) | 5.1 x 10–5 M | D) | 1.9 x 10–10
M |
|
|
|
9.
|
Calculate the [H+] in a 1.0 M solution of HCN
(Ka = 4.0 x 10–10).
A) | 2.0 x 10–10 | B) | 4.0 x
10–10 | C) | 2.0 x 10–5 | D) | 2.0 x
10–8 |
|
|
|
10.
|
Which acid below has the strongest conjugate base?
|
|
|
11.
|
Which of the following solutions contains the strongest acid?
A) | 0.1 M HA, pH = 6.85 | B) | 0.1 M HD, pH = 7.22 | C) | 0.1 M HE, pH =
4.34 | D) | 0.1 M HJ, pH = 8.34 |
|
|
|
12.
|
Which of the following acids is the weakest?
A) | HA, Ka = 6.8 x 10–8 | B) | HM, Ka =
3.4 x 10–6 | C) | HJ, Ka = 2.1 x
10–5 | D) | HZ, Ka = 3.0 x
10–10 |
|
|
|
13.
|
A solution is prepared by adding 0.10 mol of Fe(NO3)3 to 1
L of water. Which of the following statements is true?
A) | The solution is basic | B) | The solution is acidic | C) | The solution is
neutral | D) | No meaningful predictions can be made without knowing Ka and Kb
values |
|