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Solubility equilibrium

Total questions: 10

Worksheet time: 10mins

Name
Class
Date
1.

The concentration of OH– in a saturated solution of Mg(OH)2 is 3.6 x 10–4 M. The Ksp of Mg(OH)2 is

a)

1.3 x 10–7

b)

4.7 x 10–11

c)

3.6 x 10–4

d)

2.3 x 10–11

2.

The correct mathematical expression for finding the molar solubility (X) of Sn(OH)2 is:

a)

2(X)3 = Ksp

b)

108(X)5 = Ksp

c)

4(X)3 = Ksp

d)

8(X)3 = Ksp

3.

Barium carbonate has a measured solubility of 4.0 x 10–5 at 25°C. Determine the Ksp.

a)

5.3 x 10–10

b)

6.1 x 10–5

c)

9.1 x 10–7

d)

1.6 x 10–9

4.

The [IO3–] in a saturated solution of Ce(IO3)3 is 5.55 x 10–3 M. Calculate the Ksp for Ce(IO3)3.

a)

3.16 x 10–10

b)

1.03 x 10–5

c)

2.56 x 10–8

d)

3.51 x 10–11

5.

Determine the concentration of the Ag+ ion in a saturated solution of silver phosphate (Ag3PO4). The solubility of silver phosphate at 25°is 1.6 x 10–5 mol/L.

a)

1.6 x 10–5 M

b)

3.2 x 10–5 M

c)

4.8 x 10–5 M

d)

6.4 x 10–5 M

6.

The molar solubility of PbI2 is 1.5 x 10-3 M. Calculate the value of Ksp for PbI2.

a)

1.5 x 10-3

b)

2.3 x 10-6

c)

1.4 x 10-8

d)

3.4 x 10-9

7.

What is the equilibrium expression for the solubility product (Ksp) of the following salt :


MgCO3

a)

Ksp = [Mg2+] [CO3-]

b)

Ksp = [Mg2+] [CO32-]

c)

Ksp = [Mg2+]2 [CO32-]

d)

Ksp = [Mg2+] [CO32-]2

8.

What is the equilibrium expression for the solubility product (Ksp) of the following salt :


Al(OH)3

a)

Ksp = [Al+] [OH-]3

b)

Ksp = [Al2+] [OH-]3

c)

Ksp = [Al+]3 [OH3-]

d)

Ksp = [Al3+] [OH-]3

9.

What is the equilibrium expression for the solubility product (Ksp) of the following salt :


Fe2S3

a)

Ksp = [Fe2+]3 [S3-]2

b)

Ksp = [Fe+]2 [S-]3

c)

Ksp = [Fe3+]2 [S2-]3

d)

Ksp = [Fe2+] [S3-]

10.

Which of the following equation represents the equilibrium equation of solubility of BaSO4 in water ?

a)

BaSO4(s) ↔ Ba2+(aq) + 2SO4-(aq)

b)

BaSO4(s) ↔ Ba+(aq) + 4SO-(aq)

c)

BaSO4(s) ↔ Ba+(aq) + SO4-(aq)

d)

BaSO4(s) ↔ Ba2+(aq) + SO42-(aq)