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CHAPTER 7 IONIC EQUILIBRIUM

Total questions: 10

Worksheet time: 7mins

Name
Class
Date
1.

According to Arrhenius, what is the definition of an ACID?

a)

a substance that contains hydroxide and ionizes to produce OH-

b)

a substance that contains hydrogen and ionizes to produce H+

c)

a substance that contains hydrogen and ionizes to produce OH-

d)

a substance that contains hydroxide and ionizes to produce H+

2.

According to Bronsted-Lowry, what is the definition of an BASE?

a)

a substance that donates a hydrogen (H+) ion

b)

a substance that donates a hydroxide (OH-) ion

c)

a substance that accepts a hydrogen (H+) ion

d)

a substance that accepts a hydroxide (OH-) ion

3.

Which of the following shows the CORRECT conjugate acid base pair?

a)

HCI (acid) / H3O+ (conjugate base)

b)

HCI (acid) / CI- (conjugate base)

c)

HCI (base) / CI- (conjugate acid)

d)

HCI (base) / H3O+ (conjugate acid)

4.
If the pH of a solution is 7 the solution is said to be
a)
Acidic
b)
Basic
c)
Neutral
d)
Tasty
5.

If the [H3O+] of a solution is 6.8 x 10-8 M, the pH is

a)

7.17

b)

3.2 x 10-5

c)

7.2

d)

7.62

6.

Calculate the pH of solution prepared by dissolving 5.9 x 10⁻⁵ moles of HCl in 1.0 L of pure water.

a)

3.77

b)

4.77

c)

4.23

d)

10.23

7.

Calculate the pH of 5.0 x 10⁻⁴ M NaOH solution.

a)

3.30

b)

10.67

c)

11.00

d)

4.30

8.
What is the conjugate acid in the following equation?
a)
PO43- 
b)
HNO3 
c)
NO3- 
d)
HPO42-
9.
If the pH of a solution is 5 the [H+] is
a)
1.0 x 10 M
b)
1.0 x 10 M
c)
5.0 x 10 M
d)
1.0 x 10-5  M
10.

If the [H3O+] of a solution is 6.8 x 10-8 M, the pH is

a)

7.17

b)

3.2 x 10-5

c)

7.2

d)

7.62