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Consider an amphoteric hydroxide, M(OH)2(s), where M is a generic metal

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Consider an amphoteric hydroxide, M(OH)2(s), where M is a generic metal.

M(OH)2(s)=M^2+(aq)+2OH^-(aq) KSP=7x10^-16

M(OH)2(s)+2OH^-(aq)=[M(OH)4]^2-(aq) Kf= 0.05

Estimate the solubility of M(OH)2 in a solution buffered at pH = 7.0, 10.0, and 14.0.