A buffer solution of total concentration 0.20 M is to be prepared at pH 5.00 using acetic acid (CH₃COOH, Ka = 1.8 × 10⁻⁵) and sodium acetate (CH₃COONa). Calculate the masses of acetic acid and sodium acetate required to prepare 1.00 L of this buffer.

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Accepted Answer

4.3 g CH₃COOH and 10.6 g CH₃COONa (for 1 L)

Waec Model Questions Vol1 2024 Chemistry Question 3

A buffer solution of total concentration 0.20 M is to be prepared at pH 5.00 using acetic acid (CH₃COOH, Ka = 1.8 × 10⁻⁵) and sodium acetate (CH₃COONa). Calculate the masses of acetic acid and sodium acetate required to prepare 1.00 L of this buffer.

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Waec Model Questions Vol1 2024 Chemistry Question 3

A buffer solution of total concentration 0.20 M is to be prepared at pH 5.00 using acetic acid (CH₃COOH, Ka = 1.8 × 10⁻⁵) and sodium acetate (CH₃COONa). Calculate the masses of acetic acid and sodium acetate required to prepare 1.00 L of this buffer.

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About This Question

Master the Exam!

A buffer solution of total concentration 0.20 M is to be prepared at pH 5.00 using acetic acid (CH₃COOH, Ka = 1.8 × 10⁻⁵) and sodium acetate (CH₃COONa). Calculate the masses of acetic acid and sodium acetate required to prepare 1.00 L of this buffer.