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In a solution of formic acid (Ka=1.7xx10...

In a solution of formic acid `(K_a=1.7xx10^(-4))`, the `[H^+] =2.3xx10^(-3)`.What is the concentration of formic acid in mol `L^(-1)`?

A

`7.2xx10^(-2)`

B

`3.1xx10^(-2)`

C

`5.3xx10^(-6)`

D

`3.9xx10^(-7)`

Text Solution

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The correct Answer is:
b
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