A buffer solution contains 0.1 M of acetic acid and 0.1 M of sodium acetate.

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A buffer solution contains 0.1 M of acetic acid and 0.1 M of sodium acetate.What will be its pH? (pKa of acetic acid is 4.75)

Options

(a) 5
(b) 4
(c) 5.25
(d) 4.75

Correct Answer:

4.75

Explanation:

Applying the equation:
pH = log {[Salt]/[Acid]} + pKₐ
⇒ here, pH = pKₐ + log 1, pH = 4.75.

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Topics: Equilibrium (104)
Subject: Chemistry (2512)

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