K_eq = 3.9 × 10^–11 for the dissolution of calcium fluoride in water:

(a) What is another name for K_eq for this reaction?

(b) If the equilibrium calcium ion concentration in a saturated aqueous solution of calcium fluoride is 3.3 × 10^–4 M, what is the equilibrium fluoride ion concentration?

(c) Which is larger, the rate constant for the forward reaction or the rate constant for the reverse reaction?

(d) Which is larger, E_a for the forward reaction or E_a for the reverse reaction?

(e) Which is larger, the rate of the forward reaction or the rate of the reverse reaction?

(f) For lithium carbonate, K_sp = 0.0011. Write the balanced chemical equation and the equilibrium expression for the dissolution of Li₂CO₃ in water.

(g) Which is more soluble in water, calcium fluoride or lithium carbonate?

Transcribed Image Text:

CaF₂(s) Ca²+ (aq) + 2F (aq)