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 $