AP Chemistry : Solubility and Equilibrium

Study concepts, example questions & explanations for AP Chemistry

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Example Questions

Example Question #41 : Solutions

Calculate the molar solubility of AgBr in 0.050 M AgNO3 at room temperature.  The Ksp of AgBr is 5.4 x 10-13.

Possible Answers:

1.08 x 10-11 M

2.16 x 10-11 M

1.57 x 10-12 M

2.16 M

1.08 M

Correct answer:

1.08 x 10-11 M

Explanation:

Example Question #41 : Solutions

Would the molar solubility of Cr(OH)3 increase or decrease as the pH is lowered (i.e. made more acidic)?

Possible Answers:

Decrease

There is no change

Can not be determined

Increase

Correct answer:

Increase

Explanation:

Since Cr(OH)3 is a basic salt, decreasing the pH makes it more soluble.

Example Question #401 : Ap Chemistry

Calculate the molar solubility of SrF2 in 0.023M NaF.  The Ksp for SrF2 is 4.3 x 10-9.

Possible Answers:

3.2 x 10-3 M

1.6 x 10-3  M

3.2 x 10-5 M

8.1 x 10-6 M

5.2 x 10-4 M

Correct answer:

8.1 x 10-6 M

Explanation:

Example Question #41 : Solutions

Calculate the molar solubility of Mn(OH)2 at pH 9.5.  The Ksp for Mn(OH)2 is 1.6 x 10-13.

Possible Answers:

2.1 x 10-5 M

3.5 x 10-4 M

1.6 x 10-4 M

2.4 x 10-3 M

1.5 x 10-3 M

Correct answer:

1.6 x 10-4 M

Explanation:

Example Question #42 : Solutions

Calculate the molar solubility of CaF2 (Ksp  = 3.9 x 10-11) in a room temperature solution of 0.010 M Ca(C2H3O2)2.

Possible Answers:

3.1 x 10-5 M

1.6 x 10-2 M

3.2 x 10-2 M

4.2 x 10-4M

3.7 x 10-4 M

Correct answer:

3.1 x 10-5 M

Explanation:

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