Question

11. Find out (OH-) concentration in pH = 3.3 solution: (1) 5.3 x 10 -4 (2) 5.3 x 10-10 (3) 2 x 10-10 (4) 2 x 10-11 . ​

Answer 1

(4) 2 x 10-11

Explanation:

We know that,

pOH = 14 - pH

        = 14 - 3.3

        = 10.7

OH⁻ = Antilog 10.7

       = 2 x 10-11