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WorksheetspH or pOH
Total questions: 22
Worksheet time: 54mins
Name
Class
Date
1.
If a solution has a concentration of hydrogen ions of 1 x 10-5 mol/L, what is the pH of the solution?
a)
-5
b)
1
c)
5
d)
10
2.
What is the pH of a 1 x 10-8 M solution of HNO3?
a)
8
b)
6
c)
7
d)
7.5
3.
If the pH of a solution is 5 the [H+] is
a)
1.0 x 105 M
b)
1.0 x 109 M
c)
5.0 x 101 M
d)
1.0 x 10-5 M
4.
If the pH of a solution is 5.6 the pOH is
a)
6.5
b)
12.4
c)
8.4
d)
5.6
5.
If the [OH-] of a solution is 2.7 x 10-4 mol/L the pOH of the solution is
a)
10.44
b)
3.57
c)
1.00
d)
-4.43
6.
What is the [H+] if the pH is 4.0?
a)
1.0 x 10-10 M
b)
1.0 x 10-4 M
c)
1.0 x 10-14 M
d)
1.0 x 10-7 M
7.
What is the [OH-] if the pH is 4.9?
a)
7.94 x 10-10 M
b)
1.0 x 10-4 M
c)
7.94 x 10-14 M
d)
4.9 x 10-10 M
8.
Ammonia has a pH of 12. Ammonia is __________.
a)
an acid
b)
a base
c)
an element
d)
a metal
9.
If the solution of HNO3 has a pH of 8 and a pOH of 6. Is it an acid, base, or neutral?
a)
acid
b)
base
c)
neutral
10.
What is the pH of a solution where the [H+] is 1.0 x 10-11?
a)
11
b)
13
c)
14
d)
1
11.
What is the pH of a solution that has a [H+] of 2.5 x 10-5?
a)
4.60
b)
5.0
c)
2.5
d)
7
12.
What is the pOH of a solution where the [OH-] is 7.3 x 10-2 M?
a)
-1.14
b)
2.0
c)
1.14
d)
7.3
13.
What is the pOH of a solution where the [OH-] is 7.3 x 10-2 M?
a)
-1.14
b)
2.0
c)
1.14
d)
7.3
14.
What is the [OH-] if the [H+] is 1.0 x 10-3M?
a)
1.0 x 10-3 M
b)
6.02 x 10-23 M
c)
1.0 x 10-14 M
d)
1.0 x 10-11 M
15.
What is the [H+] if the pH is 4.0?
a)
1.0 x 10-10 M
b)
1.0 x 10-4 M
c)
1.0 x 10-14 M
d)
1.0 x 10-7 M
16.
What is the pOH of a solution that has a pH of 2?
a)
10
b)
12
c)
14
d)
1
17.
What is the [OH-] if the pH is 4.9?
a)
7.94 x 10-10 M
b)
1.0 x 10-4 M
c)
7.94 x 10-14 M
d)
4.9 x 10-10 M
18.
The lower the pH, the greater the concentration of :
a)
OH-
b)
H+
19.
The greater the pOH, the smaller the concentration of
a)
OH-
b)
H+
20.
What is the conjugate base of HClO4?
a)
H+
b)
Cl-
c)
ClO3-
d)
ClO4-
21.
What is the closest pH to a solution with a [H+] = 2.5 x 10-10?
a)
2.5
b)
3.0
c)
4
d)
9
22.
The [OH-] = 4.0 x 10-9, what is the pH of the solution?
a)
9.0
b)
5.7
c)
8.3
d)
4.3
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