Equilibrium Question 888
Question: The pH of solution, containing 0.1 N HCI and $ 0.1,N,CH_3COOH,(K_{a}=2\times {10^{-5}}) $ is
Options:
A) 1
B) 0.7
C) 3
D) 1.3
Show Answer
Answer:
Correct Answer: D
Solution:
Dissociation of acetic acid $ (CH{ _3}COOH) $ will be very less so $ {H^{+}} $ from $ HCl $ . $ PH=-{{\log }^{({H^{+}})}}=-\log ({10^{-1}})=1. $
