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Q.

The solubility of Mg(OH)2 in a buffer of pH = 10 is found to be 0.0232 gm/lit. Molar solubility of Mg(OH)2 in pure water would be (in mol/1.it)

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a

105

b

3.2×108

c

3.2×105

d

104

answer is D.

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Detailed Solution

OH=104

Ksp=0.023258×108

=4×1012

Now,    4s3=4×1012

s=104

Hence, option D is correct.

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