1.

The degree of dissociation of 0.1 M HCN solution is 0.01%. Its ionisation constant would be

Answer»

`10^(-3)`
`10^(-5)`
`10^(-7)`
`10^(-9)`

SOLUTION :`HA hArr H^(+) + A^(-)`
`K = C ALPHA^(2) = 0.1 xx (10^(-4))^(2) = 10^(-9)`.


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