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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

`2.1xx10-2`

B

`2.1xx10-4`

C

`1.1xx10-6`

D

`1.6xx10-8`

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The correct Answer is:
A, B
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