Which one has pH 12 - Vidyadip

MCQ

Which one has $pH$ $12$

✓
$0.01\,M\,\,KOH$
B
$1\,N\,\,KOH\,\,ml$
C
$1\,N\,NaOH\,\,ml$
D
$3.0 \times {10^{ - 7}}\,M$

✓

Answer

Correct option: A.

$0.01\,M\,\,KOH$

(a) $[O{H^ - }] = {10^{ - 2}}$ $M$ ; $pOH = 2$

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

$pH = 14 - 2 = 12$

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