Neco 2023 Chemistry Question 25
Practice objective / multiple choice question 25 from the 2023 Neco Chemistry examination.
In the esterification of benzoic acid with ethanol, 0.050 mol of benzoic acid (\( \mathrm{C_6H_5COOH} \)) is mixed with 0.075 mol of ethanol (\( \mathrm{C_2H_5OH} \)) in the presence of excess sulphuric acid. The reaction also contains 0.020 mol of acetic acid impurity, which can react with ethanol to give ethyl acetate. After work‑up, 6.00 g of ester mixture is obtained. Gas‑chromatography analysis shows that ethyl benzoate constitutes 80 % by mass of the mixture. Calculate the percent yield of ethyl benzoate based on the amount of benzoic acid initially present.
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About This Question
This is Neco 2023 Chemistry Question 25. It is one of the objective questions from the 2023 Neco Chemistry examination.
Difficulty level: Hard .
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