Waec Model Questions Vol1 2022 Chemistry Question 7
Practice objective / multiple choice question 7 from the 2022 Waec Model Questions Vol1 Chemistry examination.
A mixture containing 0.050 mol of acetic acid (CH₃COOH) and 0.030 mol of propanoic acid (CH₃CH₂COOH) is refluxed with excess ethanol in the presence of a catalytic amount of H₂SO₄. At 25 °C the equilibrium constant for the esterification of acetic acid to ethyl acetate is K₁ = 4.0, and for propanoic acid to ethyl propionate is K₂ = 1.5 (K = [ester]/[acid] because the activity of ethanol and water are taken as unity). Assuming the two reactions reach equilibrium independently, calculate the total mass of esters formed.
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This is Waec Model Questions Vol1 2022 Chemistry Question 7. It is one of the objective questions from the 2022 Waec Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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