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A 0.20 M solution of methanoic acid has ...

A 0.20 M solution of methanoic acid has degree of ionization of 0.032. Its dissociation constant would be

A

`2.1 xx 10^(-2)`

B

`2.1 xx 10^(-4)`

C

`1.1 xx 10^(-6)`

D

`9.6 xx 10^(-8)`

Text Solution

Verified by Experts

The correct Answer is:
B
Apply `K_(a)=[HA]xx(alpha)^(2)`
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