Equilibrium Question 303
Question: A weak acid is 0.1% ionised in 0.1 M solution. Its pH is [BVP 2004]
Options:
A) 2
B) 3
C) 4
D) 1
Show Answer
Answer:
Correct Answer: C
Solution:
For a monobasic acid $ [{H^{+}}]=C\alpha $
$ =\frac{1}{10}\times 0.001={10^{-4}} $
Þ pH = 4