Gce Model Questions Vol1 2019 Chemistry Question 31
Practice objective / multiple choice question 31 from the 2019 Gce Model Questions Vol1 Chemistry examination.
A 0.500 g sample containing a mixture of ethanol \(\mathrm{C_2H_5OH}\) and 2‑propanol \(\mathrm{(CH_3)_2CHOH}\) is reacted with excess glacial acetic acid in the presence of catalytic \(\mathrm{H_2SO_4}\). The esterification gives ethyl acetate \(\mathrm{CH_3COOCH_2CH_3}\) and isopropyl acetate \(\mathrm{CH_3COOCH(CH_3)_2}\). After work‑up, 0.336 g of ethyl acetate (isolated yield 80 %) and 0.432 g of isopropyl acetate (isolated yield 90 %) are obtained. Assuming 100 % conversion of the alcohols to the corresponding esters before isolation, calculate the mass of ethanol present in the original mixture (in grams, to three significant figures).
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This is Gce Model Questions Vol1 2019 Chemistry Question 31. It is one of the objective questions from the 2019 Gce Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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