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The first and second dissociation consta...

The first and second dissociation constants of an acid `H_(2)A` are `10^(-5)` and `5 xx 10^(-10)` respectively . Then overall dissociation constant of the acid is

A

` 5 xx10 ^(15)`

B

` 5.0 xx 10^(-15)`

C

` 0.2 xx 10^(5)`

D

` 5.0 xx 10^(-5)`

Text Solution

Verified by Experts

The correct Answer is:
B
`K = Ka_1 . Ka_2 = 5 xx 10^(_5) `
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