Find the Ka of the reaction

Question

What is the Ka reaction of HCN?

 The ka of HCN is 6.2 x 10^-10

. I thought that the answer was exactly as the question said: 6.2 x 10^-10, but I am not sure why it is wrong.

Answer 1

If that’s the actual question and you didn’t make an error in copying it, then your answer is correct. But perhaps they are asking something else. Go back and check and be sure to pose tge question exactly as in the original.