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Chemical synthesis — Question 82

Original QCE Vault practice · 5 marks

Q82 · Practice questionComplex familiar5 marks

QUESTION 82 (5 marks)

A student reacts 0.300 mol ethanol with 0.200 mol ethanoic acid to make ethyl ethanoate. The isolated ester mass is 15.0 g. Use M(ester)=88.1 gmol−1.

a) Write the balanced equation and identify the limiting reagent for the theoretical-yield calculation. [2 marks]

b) Calculate theoretical ester mass and percentage yield. [2 marks]

c) Give one chemically relevant reason why the isolated yield may be below 100%. [1 marks]

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