Calculate the pH of \( 0.2 \mathrm{M} \mathrm{CH}_{3} \mathrm{COOH} \) \( \left(\mathrm{K}_{\mathrm{a}}=1.85 \times 10^{-5}\right) \)

A 2.02

B 2.86

C 2.52

D 2.72

Solution

Correct Answer: Option D

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