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Question

pH of Ba(OH)2 solution is 12. Its solubility product is

A
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B
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C
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D
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Solution

The correct option is D
Since pH=12
pOH=1412=2
[OH]=102M
We know Ba (OH)2Ba2++2OH
[Ba2+]=1022M
Ksp=[Ba2+][OH]2=(1022)×(102)2=5×107

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