Equilibrium Question 383
Question: Which one has $ pH $ 12 [Roorkee 1995]
Options:
A) $ 0.01,MKOH $
B) $ 1,NKOHml $
C) $ 1,N,NaOHml $
D) $ 3.0\times {10^{-7}},M $
Show Answer
Answer:
Correct Answer: A
Solution:
$ [O{H^{-}}]={10^{-2}} $ M ; $ pOH=2 $
$ pH+pOH=14 $ ; $ pH=14-pOH $
$ pH=14-2=12 $