A-LevelChemistryEquilibriaMay/June 2019Paper 1 Q101 Mark
Ethyl ethanoate undergoes the following reaction. CH3CO2C2H5 + H2O ⇌ C2H5OH + CH3CO2H Kс = 0.27 Equal amounts of ethanoic acid and ethanol were mixed together and allowed to reach equilibrium. At equilibrium, the concentrations of both ethanoic acid and ethanol were 0.42 mol dm⁻³. What is the concentration of ethyl ethanoate at equilibrium?
A0.22 mol dm⁻³
B0.65 mol dm⁻³
C0.81 mol dm⁻³
D1.54 mol dm⁻³
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The correct answer is C. This question tests the candidate's understanding of equilibria within the Chemistrysyllabus. The examiner's mark scheme requires...
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