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



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