Waec Model Questions Vol1 2024 Chemistry Question 37

Practice objective / multiple choice question 37 from the 2024 Waec Model Questions Vol1 Chemistry examination.

Waec Model Questions Vol1 2024 Chemistry Objective / Multiple Choice Hard Difficulty
Question 37 WAEC_MODEL_QUESTIONS_VOL1 • 2024 • CHEMISTRY • objective

Acetic acid (CH₃COOH) reacts with ethanol (C₂H₅OH) to form ethyl acetate (CH₃COOC₂H₅) and water. The equilibrium constant Kc at 25 °C is 4.0. In a 1.0 L flask, 0.20 mol of acetic acid and 0.30 mol of ethanol are mixed. (a) Determine the equilibrium concentrations of all species. (b) If the water formed is continuously removed by a drying agent, the reaction proceeds to completion. Calculate the maximum amount (in moles) of ethyl acetate that can be obtained under this condition.

Answer Options

A. Equilibrium: [CH₃COOH]=0.060 M, [C₂H₅OH]=0.140 M, [CH₃COOC₂H₅]=0.140 M, [H₂O]=0.140 M; Maximum ethyl acetate = 0.14 mol
B. Equilibrium: [CH₃COOH]=0.043 M, [C₂H₅OH]=0.143 M, [CH₃COOC₂H₅]=0.100 M, [H₂O]=0.100 M; Maximum ethyl acetate = 0.10 mol
Correct Answer C. Equilibrium: [CH₃COOH]=0.043 M, [C₂H₅OH]=0.143 M, [CH₃COOC₂H₅]=0.157 M, [H₂O]=0.157 M; Maximum ethyl acetate = 0.20 mol
D. Equilibrium: [CH₃COOH]=0.050 M, [C₂H₅OH]=0.150 M, [CH₃COOC₂H₅]=0.150 M, [H₂O]=0.150 M; Maximum ethyl acetate = 0.15 mol
Correct Answer
C
Correct Option:
Equilibrium: [CH₃COOH]=0.043 M, [C₂H₅OH]=0.143 M, [CH₃COOC₂H₅]=0.157 M, [H₂O]=0.157 M; Maximum ethyl acetate = 0.20 mol

About This Question

This is Waec Model Questions Vol1 2024 Chemistry Question 37. It is one of the objective questions from the 2024 Waec Model Questions Vol1 Chemistry examination.

Difficulty level: Hard .

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