Equilibrium Question 544
Question: The $ pH $ of an aqueous solution having hydroxide ion concentration as $ 1\times {10^{-5}} $ is [MP PMT 1991]
Options:
A) 5
B) 9
C) 4.5
D) 11
Show Answer
Answer:
Correct Answer: B
Solution:
$ [O{H^{-}}]=1\times {10^{-5}} $
$ pOH=-\log [O{H^{-}}]=5 $
$ pH+pOH=14\Rightarrow pH=14-5=9 $ .
