Which one has (pH) 12. | CHEMISTRY - ACIDS, BASES AND SALTS | SolveeIt | Solveeit

Today, August 20

Question

Which one has $pH$ 12.

A

$0.01MKOH$

B

$1NKOHml$

C

$1NNaOHml$

D

$3.0 \times 10^{- 7}M$

Answer

$0.01MKOH$

Explanation

Solution

$\lbrack OH^{-}\rbrack = 10^{- 2}$ M ; $pOH = 2$

$pH + pOH = 14$ ; $pH = 14 - pOH$

$pH = 14 - 2 = 12$