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The self ionisation constant for pure HC...

The self ionisation constant for pure `HCOOH, K = [HCOO overset(o+)H_(2)] [HCOO^(Θ)]` is `10^(-6)` at room temperature. What percentage of `HCOOH` molecules are converted to `HCOO^(Θ)` ions. The density of `HCOOH` iws `1.22 g cm^(-3)`.

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The correct Answer is:
`0.004%;`
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