February 19, 2017

Homework Help: Chemistry

Posted by Val on Friday, March 19, 2010 at 8:16pm.

Suppose that two hydroxides, MOH and M'(OH)2, both have Ksp = 1.0 10-12 and that initially both cations are present in a solution at concentrations of 0.0036 mol ยท L-1. Which hydroxide precipitates first?

I know MOH ppt's first...but am not sure how to approach this second part of the problem.

At what pH does the first hydroxide precipitate, when solid NaOH is added?

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