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At 25°C, the solubility product of Mg(OH)2 is 1.0 x 10–11. At which pH, will Mg2+ ions start precipitating in the form of Mg(OH)2 from a solution of 0.001 M Mg2+ ions ?

(1) 9 

(2) 10 

(3) 11 

(4) 8

1 Answer

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Best answer

(2) 

Mg2+ + 2OH-  Mg(OH)2 

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