The solubility product of silver bromide is 5.0×10−13 at 298k. Calculate its solubility at this temperature.
A
7.07×10−7molL−1
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B
7.08×10−10molL−1
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C
7.06×10−5molL−1
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D
7.07×10−18molL−1
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Solution
The correct option is A7.07×10−7molL−1 ksp=5.0×10−13 AgBr⇌Ag+(aq)+Br−(aq)
Let solubility of AgBr is s mole/litre ∴[Ag+]=s,[Br−]=s 5×10−13=s×s s=√5×10−13 =√50×10−14=7.07×10−7molL−1