The first step in a commercial process in which magnesium is obtained from seawater involves precipitating Mg 2 as Mg(OH) 2 (s) The magnesium ion concentration in seawater is about 0 059 M If a seawater sample is treated so that its OH is maintained at 2 0 x 10 3 M, (a) What will be Mg 2 remaining ...

Analyze In part a of this example we compare the Q sp of the solution with the known K sp for MgOH 2 ...

The first step in a commercial process in which magnesium is obtained from seawater involves precipitating Mg

Question:

The first step in a commercial process in which magnesium is obtained from seawater involves precipitating Mg²⁺ as Mg(OH)₂(s). The magnesium ion concentration in seawater is about 0.059 M. If a seawater sample is treated so that its [OH^-] is maintained at 2.0 x 10^-3 M,

(a) What will be [Mg²⁺] remaining in solution when precipitation stops (K_sp = 1.8 x 10^-11)?

(b) Is the precipitation of Mg(OH)₂(s) complete under these conditions?

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