Neco Model Questions Vol1 2024 Chemistry Question 17

Practice objective / multiple choice question 17 from the 2024 Neco Model Questions Vol1 Chemistry examination.

Neco Model Questions Vol1 2024 Chemistry Objective / Multiple Choice Hard Difficulty
Question 17 NECO_MODEL_QUESTIONS_VOL1 • 2024 • CHEMISTRY • objective

A 250 mL aqueous mixture contains 0.050 mol of acetic acid (CH₃COOH) and 0.075 mol of ethanol (C₂H₅OH). Under acid catalysis they react to form ethyl acetate (CH₃COOC₂H₅) and water. At 25 °C the equilibrium constant for the esterification is \(K_{eq}=4.0\).\n\n(a) Calculate the maximum mass of ethyl acetate that can be formed at equilibrium, assuming no side reactions and that the volume change is negligible.\n(b) Determine the percentage of the initial acetic acid that remains unreacted at equilibrium.

Answer Options

Correct Answer A. 3.46 g of ethyl acetate; 21.5 % of the initial acetic acid remains unreacted.
B. 3.12 g of ethyl acetate; 25.0 % of the initial acetic acid remains unreacted.
C. 4.05 g of ethyl acetate; 18.3 % of the initial acetic acid remains unreacted.
D. 2.89 g of ethyl acetate; 30.2 % of the initial acetic acid remains unreacted.
Correct Answer
A
Correct Option:
3.46 g of ethyl acetate; 21.5 % of the initial acetic acid remains unreacted.

About This Question

This is Neco Model Questions Vol1 2024 Chemistry Question 17. It is one of the objective questions from the 2024 Neco Model Questions Vol1 Chemistry examination.

Difficulty level: Hard .

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