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Solubility Equilibrium

This worksheet covers Solubility Equilibrium, which is part of the Equilibrium module in the Chemistry course. Practice problems are designed to strengthen key concepts and build confidence.

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Solubility Equilibrium

Equilibrium • Chemistry

Set 5 — Mastery

What is the solubility product constant ( $K_{sp}$ ) expression for $AgCl$ in water?

$K_{sp} = [Ag^{+}][Cl^{-}]$

$K_{sp} = [AgCl]$

$K_{sp} = [Ag^{+}]^{2}[Cl^{-}]^{2}$

$K_{sp} = [Ag^{+}][Cl^{-}]^{2}$

For the dissolution of $CaSO_{4}$ , which of the following represents the correct $K_{sp}$ expression?

$K_{sp} = [Ca^{2+}][SO_{4}^{2-}]$

$K_{sp} = [CaSO_{4}]$

$K_{sp} = [Ca^{2+}]^{2}[SO_{4}^{2-}]$

$K_{sp} = [Ca^{2+}][SO_{4}^{2-}]^{2}$

If the $K_{sp}$ of $Ba(OH)_{2}$ is $5.0 imes 10^{-3}$ , what is the molar solubility ( $s$ ) of $Ba(OH)_{2}$ ?

$s = rac{1}{2} imes rac{5.0 imes 10^{-3}}{[OH^{-}]^{2}}$

$s = rac{5.0 imes 10^{-3}}{4}$

$s = rac{5.0 imes 10^{-3}}{2}$

$s = rac{5.0 imes 10^{-3}}{1}$

What is the effect of increasing temperature on the solubility of $KNO_{3}$ ?

Solubility decreases

Solubility increases

No effect

Solubility becomes zero

What is the common ion effect?

An increase in solubility due to common ions

A decrease in solubility due to common ions

No change in solubility

An increase in pH

For the salt $Ag_{2}SO_{4}$ , what is the expression for $K_{sp}$ ?

$K_{sp} = [Ag^{+}]^{2}[SO_{4}^{2-}]$

$K_{sp} = [Ag^{+}]^{2}[SO_{4}^{2-}]^{2}$

$K_{sp} = [Ag^{+}][SO_{4}^{2-}]^{2}$

$K_{sp} = [Ag^{+}]^{2}[SO_{4}^{2-}]^{3}$

Which of the following salts will have the highest solubility in water?

$AgCl$

$NaCl$

$BaSO_{4}$

$CaCO_{3}$

How does the addition of $NaCl$ to a saturated solution of $AgCl$ affect its solubility?

Increases solubility

Decreases solubility

No effect

Causes precipitation

Which factor does NOT affect the solubility of a salt in a solution?

Temperature

Pressure

Presence of common ions

Surface area of the solid

10.

What is the effect of decreasing pH on the solubility of $CaCO_{3}$ ?

Increases solubility

Decreases solubility

No effect

Causes precipitation

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