Question

20 mL, 5M NaNO2 solution is mixed with 100mL, 2M HNO2 solution to prepare a buffer solution of pH = 5.7. The Ka of HNO2 is :-
O 106
O 10-5
4x 106
4 x 10-5​

Answer 1

Explanation:

20 ml, 5 M NaNO2 solution is mixed with 100 ml, 2M HNO2 solution to prepare a buffer solution of pH = 5.7. The Ka of HNO2 is :- 1 10-6 2 10-5 3 4x 10-6.