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To what volume of 10 litre of 0.5 M CH(3...

To what volume of 10 litre of 0.5 M `CH_(3)COOH` `(K_(a)=1.8xx10^(-5))` be diluted in order to double the hydroxide ion concentration :

A

20 L

B

30 L

C

40 L

D

None of these

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