When 0 4 mole of HCl is added to one litre of solution containing 0 2 M each of HCN - Chemistry - Electrochemistry

Question

When 0 4 mole of HCl is added to one litre of solution containing 0
2 M each of HCN and CN¯
ion pH of solution become ( K a =   1 8 × 10 - 5 )

(1) 3 5
(2) 1
(3) 0 7
(4) 4

Ravi kumar · Accepted Answer

Hello student

<img alt="" src=
"https://s3mn%20mnimgs%20com/img/shared/content_ck_images/ck_5e80a64fcf087%20png">
for this question, (3) is answer

thanks and regards

When 0.4 mole of HCl is added to one litre of solution containing 0.2 M each of HCN and CN¯ ion. pH of solution become ( K a = 1 . 8 × 10 - 5 ) (1) 3.5 (2) 1 (3) 0.7 (4) 4