Equilibrium Question 493
Question: When $ {10^{-8}} $ mole of $ HCl $ is dissolved in one litre of water, the $ pH $ of the solution will be [CPMT 1973, 94; DPMT 1982]
Options:
A) 8
B) 7
C) Above 8
D) Below 7
Show Answer
Answer:
Correct Answer: D
Solution:
As the solution is acidic, $ pH<7 $ . This is because $ [{H^{+}}] $ from $ H_2O $
$ ({10^{-7}}M) $ cannot be neglected in comparison to $ {10^{-8}} $ .
