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What volume (in L) of water must be adde...

What volume (in `L`) of water must be added to `1L` of `0.1M` solution of `B` (weak organic monoacidic base.:Ionisation constant =`10^(-5)`) to triple the `%` ionisation of base?

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`(alpha_(1))/(alpha_(2))=sqrt((C_(1))/(C_(2)))rArr (1)/(3)sqrt((0.1)/(0.1(1+V)))rArr (1)/(9)=(1)/(1+V)rArr V=8L`
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