AP Chemistry Solubility

Which of the following shows the correct dissolution reaction for BaCl₂ as related to K_sp?

• BaCl₂(s) -> Ba ²⁺(aq) + Cl₂^-(aq)

• BaCl₂(aq) -> Ba ²⁺(aq) + 2Cl^-(aq)

• BaCl₂(s) -> Ba ²⁺(aq) + 2Cl^-(aq)

• Ba ²⁺(aq) + 2Cl^-(aq) -> BaCl₂(s)

If K < Q, which part of the reaction will speed up?

• dissolution

• precipitation

• none

An unknown salt, M₂Z, has a K_sp of 3.3 x 10^-9. Calculate the solubility in mol/L of M₂Z.

• 2.9 x 10^-5 M
• 5.7 x 10^-5 M
• 9.4 x 10^-5 M
• 3.7 x 10^-5 M

The molar solubility of PbI₂ is 1.52 x 10^-3 M. Calculate the value of K_sp for PbI₂.

• 3.51 x 10^-9
• 1.40 x 10^-8
• 4.62 x 10^-6
• 1.52 x 10^-3

Calculate the [H⁺] in a solution that has a pH of 2.73.

• 5.4 x 10^-12 M
• 1.9 x 10^-3 M
• 2.7 M
• 11.3 M

Silver chromate, Ag₂CrO₄, has a K_sp of 8.96 x 10^-12. Calculate the solubility in mol/L of silver chromate.

• 1.31 x 10^-4M
• 1.65 x 10^-4M
• 2.25 x 10^-12M
• 2.08 x 10^-4M

The solubility of CaSO₄ in pure water at 0^ₒC is 1.14 g/L. The value of the solubility product is

• 8.37 x 10^-3
• 1.14 x 10^-3
• 9.15 x 10^-2
• 7.01 x 10^-5

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

• 2s² = Ksp
• 2s³ = Ksp
• 4s³ = Ksp
• 8s³ = Ksp

Calculate the [OH^-] if the pH is 10.5

• 3.2 x 10^-4 M

• 3.2 x 10^-11 M

• 1 x 10^-7 M

• 3.5 M

The solubility will ______ for Ag₂CrO₄ if the pH decreases.

• increase

• decrease

• remain the same