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)`

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1 Answers

Correct Answer - B
Apply `K_(a)=[HA]xx(alpha)^(2)`

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