The $pH$ of a buffer solution decreases by $0.02$ units when $0.12 \ g$ of acetic acid is added to $250 \ mL$ of a buffer solution of acetic acid and potassium acetate at $27^{\circ} C$. The buffer capacity of the solution is
- A$0.1$
- B$10$
- C$1$
- D$0.4$
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Which of the following mixtures of solutions can function as a buffer solution?
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View SolutionThe Henderson-Hasselbalch equation for an acidic buffer is given by $pH - pK_a = 5$. This condition holds true when:
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