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 $



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