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The degree of dissociation of weak elect...

The degree of dissociation of weak electrolyde is inversely proportional to the square root fo concentration. It is called Ostwald's dilution law.
`alpha = sqrt((K_(a))/(c))` As the tempertaure increases, degree of dissociation will increase.
`(alpha_(1))/(alpha_(2)) = sqrt((K_(a_(1)))/(K_(a_(2))))` if concentration is same.
`(alpha_(1))/(alpha_(2)) = sqrt((c_(2))/(c_(1)))` if acid is same.
`a_(1)` and `a_(2)` are in ratio of `1:2, K_(a_(1)) = 2xx10^(-4)`. What will be `K_(a_(2))`?

A

`8xx10^(-4`

B

`2 xx10^(-4)`

C

`4xx10^(-4)`

D

`1xx10^(-4)`

Text Solution

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The correct Answer is:
A
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