Question

Calculate the ph of a 0.10M of nacn ,ka for Hcn is 4.9\10000000000

Answer 1

Answer:

Explanation:

we can see this is a buffer solution

we can say buffer solution because solution consists of

weak acid and weak acid strong base

ph of buffer solution for acidic buffer is

ph=pka+log salt/acid

ph=9.31+log 1

ph=9.31

i think you have given ka value wrong