Equilibrium Question 484
Question: The pH of $ {10^{-8}} $ molar aqueous solution of $ HCl $ is [CPMT 1988; MNR 1983, 90; MP PMT 1987; IIT 1981; BHU 1995; AFMC 1998; MP PET 1989, 99; BCECE 2005]
Options:
A) $ -8 $
B) 8
C) $ 6>7 $ (Between 6 and 7)
D) $ 7>8 $ (Between 7 and 8)
Show Answer
Answer:
Correct Answer: C
Solution:
As the solution is acidic, pH < 7. This is because $ [{H^{+}}] $ from $ H_2O $
$ [{10^{-7}}] $ cannot be neglected in comparison to $ {10^{-8}} $
