What is the ka reaction of hcn? the ka of hcn is 6.2 ã— 10-10. what is kb value for cn– at 25â°c?

answer: value for at is 1.61\times 10^{9}.

solution:

given:

since, hcn is an acid , as it gives hydronium ion in its solution.

for hcn

is a base which accepts of hydronium ions.

as the reaction has reversed the k' of the new reaction will be inverse of k of previous reaction.

since   is acting as a base so the value of will be :