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WorksheetspH Value
Total questions: 18
Worksheet time: 13mins
Name
Class
Date
1.
The pH scale is a range from:
a)
1-7
b)
0-14
c)
1-14
d)
1-20
2.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
3.
A(n) _______ is a substance with a pH greater than 7.
a)
Base
b)
Acid
c)
Buffer
d)
Water
4.
A solution with a pH of 3.6 would be...
a)
Acid
b)
Base
c)
Neutral
d)
Acid and Base
5.
A solution with a pH of 8.6 would be...
a)
Acid
b)
Base
c)
Neutral
d)
Acid and Base
6.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk
7.
Bleach is a strong base, what is the pH level of bleach?
a)
13
b)
14
c)
1
d)
2
8.
Feels slippery.
a)
Acids
b)
Bases
c)
All
9.
Ca(OH)2 is an example of a(n)
a)
Acid
b)
Base
c)
Neutral
10.
A solution with a pH of 7.0 would have...
a)
more H ions than OH ions
b)
more OH ions than H ions
c)
equal number of H and OH ions
d)
None of these.
11.
Which of the following instruments used to measure pH is the MOST accurate?
a)
Litmus paper
b)
pH meter
c)
Universal Indicator
d)
pH paper
12.
The hydroxide ion concentration of an alkali, MOH is 0.03 mol dm-3. What is the pH of this alkali solution?
a)
1.5
b)
1.0
c)
12.5
d)
10.7
13.
An acid HX has a pH value of 1.5. What is the concentration of hydrogen ions, H+ in this acid in mol dm-3?
a)
0.032
b)
1.500
c)
0.049
d)
0.015
14.
What does pH measure?
a)
the amount of hydrogen (H+) ions
b)
the amount of hydroxide (OH-) ions
c)
amount of water
d)
all of the above
15.
Which of the following is the strongest acid?
a)
1
b)
5
c)
3
d)
8
16.
Which of the following is the strongest base?
a)
4
b)
14
c)
7
d)
15
17.
A solution has 0.0235 mol dm-3 HCl. Calculate the pH of this solution.
a)
12.371
b)
1.699
c)
1.629
d)
15.699
18.
A solution has 0.0235 mol dm-3 HCl. Calculate the pOH of this solution.
a)
12.371
b)
1.699
c)
1.629
d)
15.699
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