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Voltage of the cell Pt, H(2) (1atm)|HOC...

Voltage of the cell `Pt, H_(2) (1atm)|HOCN(1.3 xx 10^(-3)M)||Ag^(+) (0.8M) |Ag(s)` is `0.982V`. Calculate the `K_(a)` for `HOCN`, neglect `[H^(+)]` because of oxidation of `H_(2)(g)`
`Ag^(+) +e^(-) rarr Ag(s) = 0.8V`

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