Neco Model Questions Vol1 2022 Chemistry Question 7

Practice essay / theory question 7 from the 2022 Neco Model Questions Vol1 Chemistry examination. This question covers Acids, Bases and Salts .

Neco Model Questions Vol1 2022 Chemistry Essay / Theory

Topic: Acids, Bases and Salts

Question 7 NECO_MODEL_QUESTIONS_VOL1 • 2022 • CHEMISTRY • essay

A solution is prepared by dissolving 0.250 mol of acetic acid (CH₃COOH, Ka = 1.8 × 10⁻⁵) and 0.150 mol of sodium acetate (CH₃COONa) in enough water to make exactly 1.00 L of solution at 25 °C.

Question Parts

( a )

Calculate the initial pH of the solution.

( b )

If 0.050 mol of 0.100 M HCl is added to the solution (volume remains 1.00 L), calculate the new pH of the mixture.

( c )

After the addition of HCl, a 0.200 M NaOH solution is added to restore the original pH. Calculate the minimum volume (in mL) of NaOH required.

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About This Question

This is Neco Model Questions Vol1 2022 Chemistry Question 7. It is one of the essay questions from the 2022 Neco Model Questions Vol1 Chemistry examination.

The question covers Acids, Bases and Salts .

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