Answer the Following Questions

question 11

Essay

Answer the following questions:
a. Explain why the solubility of carbonates and phosphates is increased by lowering the pH, but the solubility of chlorides is unaffected by lowering the pH.
b. The solubility of copper(II) carbonate is dramatically increased by the addition of NH₃, but the solubility of copper(II) phosphate is not. Referring to the data below, explain why.

K_sp for copper(II) carbonate = 2.5 ´ 10^-10
K_sp for copper(II) phosphate = 1.4 ´ 10^-37
Cu²⁺(aq) + 4 NH₃(aq)
(Kf = 1.1 ´ 10¹³)

(aq)

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