What will be the value of pH of 0.01

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Question:
What will be the value of pH of 0.01 mol dm–3 CH3COOH (Ka = 1.74 × 10–5 )?

(i) 3.4

(ii) 3.6

(iii) 3.9

(iv) 3.0

Solution:

Option (i) 3.4 is the answer.