Gce Model Questions Vol1 2025 Chemistry Question 7

Practice essay / theory question 7 from the 2025 Gce Model Questions Vol1 Chemistry examination. This question covers Acids and Bases, Buffers, Salts .

Gce Model Questions Vol1 2025 Chemistry Essay / Theory

Topics: Acids and Bases Buffers Salts

Question 7 GCE_MODEL_QUESTIONS_VOL1 • 2025 • CHEMISTRY • essay

A student prepares a buffer solution by dissolving 0.20 mol of acetic acid (CH₃COOH, Ka = 1.8 × 10⁻⁵) and 0.15 mol of sodium acetate (CH₃COONa) in enough water to make 1.00 L of solution.

Question Parts

( a )

Write the net ionic equation for the dissociation of acetic acid in water.

( b )

Calculate the pH of the buffer solution prepared above. State any assumptions you make.

( c )

Explain qualitatively what will happen to the pH if 0.05 mol of HCl is added to the buffer, and then calculate the new pH after the addition.

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About This Question

This is Gce Model Questions Vol1 2025 Chemistry Question 7. It is one of the essay questions from the 2025 Gce Model Questions Vol1 Chemistry examination.

The question covers Acids and Bases, Buffers, Salts .

View More Gce Model Questions Vol1 2025 Chemistry Questions More Gce Model Questions Vol1 Practice Questions Back to Questions

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