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Topic: Solubility of magnesium hydroxide  (Read 2913 times)

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Offline Passing

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Solubility of magnesium hydroxide
« on: March 06, 2010, 06:24:03 PM »
MgO + H2O  ::equil:: Mg(OH)2
In certain (small) amounts it dissolves  ::equil:: Mg2+ + 2OH-

How does the solubility change by neglecting the following equilibrium?
Mg(H2O)x2+ + OH-  ::equil:: (Mg(H2O)x-1(OH)]+ + H2O
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Offline Borek

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Re: Solubility of magnesium hydroxide
« Reply #1 on: March 07, 2010, 03:58:10 AM »
Only equilibria I know of are

4Mg2+ + 4OH- -> Mg4(OH)44+ log(K) = 16.3

Mg2+ + OH- -> MgOH+ log(K) = 2.58

Doesn't mean there no others, these I have listed in Kotrly/Sucha handbook.
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