Equilibrium Question 469

Question: If $ 0.4,gmNaOH $ is present in 1 litre solution, then its $ pH $ will be [CPMT 1985; BHU 1980]

Options:

A) 2

B) 10

C) 11

D) 12

Show Answer

Answer:

Correct Answer: D

Solution:

$ [NaOH]=\frac{0.4}{40}=0.01M;,[O{H^{-}}]={10^{-2}}M $

$ [{H^{+}}]={10^{-12}},pH=-\log [{H^{+}}]=12 $



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