1.

At 25^(@), K_b for CN^- (conjugate base of HCN) is 2.5xx10^(-5). If 25 mL of 0.01(M) aqueous NaOH solution isadded to 50mL of 0.01(M) HCN solution, then-

Answer»

PH of the resulting SOLUTION is 11.2
pH of the resulting solution is 9.4
at `25^(@)C` the ionisation constant for HCN is `4xx10^(-10)`
at `25^(@)C` the ionisation constant for HCN is `2.5xx10^(-5)`

ANSWER :B::C


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