Equilibrium Question 496
Question: Given a 0.1M solution of each of the following. Which solution has the lowest $ pH $ [MNR 1987]
Options:
A) $ NaHSO_4 $
B) $ NH_4Cl $
C) $ HCl $
D) $ NH_3 $
Show Answer
Answer:
Correct Answer: C
Solution:
Because it is a strong acid. $ {H^{+}}={10^{-1}} $
$ pH=-\log [{H^{+}}] $
$ =-\log [{10^{-1}}] $ ; $ pH=1 $ .
