Question

What is the Ka of 0.168M solution of Hydrocyanic acid (HCN) with pH of 3.15?

Answer 1

The answer is in the photo, but a 0,168 M HCN doesn’t have a pH of 3,15, but 5. HCN real Ka is 6,17*10^(-10).

Answer 2

Answer:

The real answer is 3.00x10^-6

Explanation:

Fill in 3.00 and then -6