pop quiz 3.2 G12

The solubility of CuI is 2 × 10^–6 molar. What is the solubility product constant, Ksp, for CuI?

• 1.4 × 10^–3

• 2 × 10^–6

• 4 × 10^–12

• 2 × 10^–12

K_sp is the symbol for the

• solubility of a solid.

• solubility product constant.

• acid ionization constant.

• base ionization constant.

What is the K_sp expression for the equation below?

AgBr(s) ⇆ Ag+ (aq) + Br- (aq)

• Ksp = [AgBr] / [Ag]

• Ksp = 1/ [Br-] [Ag+]

• Ksp = [Ag+] [Br-]

• Ksp = [Br-] [Ag+] / [AgBr]

The solubility equation for silver bromide is

AgBr (s) ⇆ Ag+(aq) + Br- (aq)

and the K_sp is 5.0 x 10^–13. What is the solubility of silver bromide?

• a. 7.1 x10^–7 mol/L

• b. 3.1 x 10^–7

• c. 2.5 x 10^–2

• d. 1.2 x 10^–22

Which of the following salts is least soluble?

• Ag₂CO₃ K_sp = 8.4 x 10^-12

• Ag₂CrO₄ K_sp = 1.1 x 10^-12

• AgI K_sp = 1.5 x 10^-16

• AgBr K_sp = 5.4 x 10^-13

When you calculate the K_sp of calcium fluoride, CaF₂, if the concentration of the F- ion is 4.2 x 10^-4 M, then the concentration of the Ca2+ ion is

• a. 2.1 x 10^-4 M.

• b. 4.2 x 10^-2

• c. 3.2 x 10^-4

• d. 8.4 x 10^-4

In which of the following reactions, described by the equations below, will an increase in pressure have no effect on the equilibrium of the system?

• a. 2NO2(g) ⇆ N2O4(g)

• b. 2NOCl (g) ⇆ 2NO(g) + Cl2(g)

• c. H2O(g) + CO(g) ⇆ H2(g) + CO2(g)

• N2(g) + 3H2(g) ⇆ 2NH3(g)

Solutions of carbolic acid, commonly known as phenol (HC₆H₅O(aq)), are widely used as disinfectants. One such solution has a concentration of 6.44 x 10^-2 mol/L and a pH of 5.60. Carbolic acid ionizes in water according to the equation

HC₆H₅O(aq) + H₂O(l) ⇌ C₆H₅O^-(aq) + H₃O⁺(aq)

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Which of the following shows the correct dissolution reaction for BaCl₂?

• Ba ²⁺(aq) + Cl₂^-(aq) -> BaCl₂(s)
• BaCl₂(aq) -> Ba ²⁺(aq) + 2Cl^-(aq)
•  BaCl₂(s) -> Ba ²⁺(aq) + 2Cl^-(aq)
• Ba ²⁺(aq) + 2Cl^-(aq) -> BaCl₂(s)

What is the K_sp expression for Cu₃(PO₄)₂?

• K_sp = [Cu⁺²]³[PO₄^-3]²

• K_sp = [Cu⁺²]²[PO₄^-3]³

• K_sp = [Cu⁺²][PO₄^-3]

• K_sp = [Cu⁺²]³[PO₄^-3]