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The `pH` of `0.1 M` solution of cyanic acid `(HCNO)` is `2.34`. Calculate the ionization constant of the acid and its degree of ionisation in the solution.

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`underset(C(1-alpha))(HCNO)hArr underset(Calpha)(H^(+))+underset(Calpha)(CNO^(-))`
`pH= 2.34 or -Iog [H^(+)]=2.34`
or `[H^(+)]= 4.57xx10^(-3)`
or `Calpha=4.57xx10^(-3)`
`:. 0.1xxalpha=4.57xx10^(-3)`
or `alpha= 4.57xx10^(-2)`
`:. K_(a)= Calpha^(2)=(4.5xx10^(-2))^(2)xx0.1`
`2.09xx10^(-4)`

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