In this worksheet, we will practice using the solubility product to calculate the impact of a common ion on the dissolution or precipitation of a salt.

Q1:

In a solution of 0.025 M in contact with solid , what is at equilibrium? The of is .

A M

B M

C M

D M

E M

Q2:

The solubility product of is . What mass of this salt will dissolve in 1.0 L of a solution with a concentration of 0.010 M?

Q3:

In a 0.00133 M solution of in contact with solid , what is at equilibrium? The
of is Give your answer to two significant figures.

A M

B M

C M

D M

E M

Q4:

What is the concentration of sulfate ions when just begins to precipitate from a solution that is 0.0758 M in ? The of is .

A M

B M

C M

D0.0758 M

E M

Q5:

What is the concentration of when starts to precipitate from a solution with an
concentration of 0.0125 M? The of is Give your answer to two significant figures.

A M

B M

C M

D M

E M

Q6:

What is the concentration of when starts to precipitate from a solution that is 0.0035 M in ? The of is . Give your answer to two significant figures.

A M

B M

C M

D M

E M

Q7:

For 0.500 L of a solution containing 19.50 g of in contact with
solid , what is at equilibrium to two significant figures? The of is .

A M

B M

C M

D M

E M

Q8:

A sample of () is contaminated with 0.1 g of (). The sample is treated with the minimum amount of water required to completely dissolve the . Noting that the two carbonate salts dissolve in the same volume of water, calculate the mass of that is also washed away.

A g

B g

C g

D g

E g

Q9:

A solution contains 0.010 M of both and
. Sulfide ions are added to the solution until of the ions have been precipitated as
. Calculate the percentage of ions remaining in the solution.
The value of is and that
of is .

Q10:

In a solution of 0.025 M in contact with solid , what is at equilibrium? The of is Give your answer to two significant figures..

A M

B M

C M

D M

E M

Q11:

In 2.250 L of solution containing 8.156 g of in contact with solid , what is at equilibrium? The of is Give your answer to two significant figures.

A M

B M

C M

D M

E M

Q12:

In a solution of 0.0313 M in contact with solid , what is at equilibrium? The of is . Give your answer to three significant figures.

A M

B M

C M

D M

E M

Q13:

How many grams of
will dissolve in 500 mL of a
0.050 M
solution?

A g

B0.16 g

C g

D g

E g

Q14:

A solution contains all of the following carbonates at the same concentration. If is gradually increased, which carbonate is first to precipitate?

A

B

C

D

E

Q15:

A solution contains all of the following carbonates at the same concentration. If is gradually increased, which carbonate is last to precipitate?

A

B

C

D

E

Q16:

Which of the following, if added to a mixture of solid and water at equilibrium, would decrease the solubility of ?

A

B

C

D

E

Q17:

Which of the following, if added to a mixture of solid and water at equilibrium, would increase the solubility of ?

A

B

C

D

E

Q18:

A mixture of , , and
contains 350 mg of each of the salts.
What volume of 1.50 M aqueous
is required to dissolve this solid material?

Q19:

If solid were dissolved in 0.01 M aqueous solutions of the following compounds, in which solution would the most solid dissolve per unit volume?

A

B

C

D

E

Q20:

is added to a
0.125 M solution of
until the solubility limit of
0.100 M is reached. The solutes react to
form according to the following equations.
Adding acid to the solution causes precipitation of the product. To 2 decimal places, at what pH does
begin to precipitate?

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