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Monitoring chemical reactions

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Question 6

A student monitors the synthesis of ethyl ethanoate ( $M_r = 88.0$ ) by reacting 0.250 mol of ethanoic acid ( $M_r = 60.0$ ) with an excess of ethanol.

\text{CH}_3\text{COOH} + \text{C}_2\text{H}_5\text{OH} \rightleftharpoons \text{CH}_3\text{COOC}_2\text{H}_5 + \text{H}_2\text{O}

After purification, the student isolates 15.4 g of ethyl ethanoate.

What is the percentage yield of ethyl ethanoate?

$30.0%30.0\%$

$61.6%61.6\%$

$70.0%70.0\%$

$102.7%102.7\%$

Markscheme

Monitoring chemical reactions Questions

GCSE
Chemistry
Monitoring chemical reactions

91 exam-style questions on OCR GCSE Chemistry Monitoring chemical reactions. Each one has a worked solution and a mark scheme showing where the marks go.

Monitoring chemical reactions

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Monitoring chemical reactions

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Question 6

A student monitors the synthesis of ethyl ethanoate ( $M_r = 88.0$ ) by reacting 0.250 mol of ethanoic acid ( $M_r = 60.0$ ) with an excess of ethanol.

\text{CH}_3\text{COOH} + \text{C}_2\text{H}_5\text{OH} \rightleftharpoons \text{CH}_3\text{COOC}_2\text{H}_5 + \text{H}_2\text{O}

After purification, the student isolates 15.4 g of ethyl ethanoate.

What is the percentage yield of ethyl ethanoate?

$30.0%30.0\%$

$61.6%61.6\%$

$70.0%70.0\%$

$102.7%102.7\%$

Markscheme

Monitoring chemical reactions Questions

GCSE
Chemistry
Monitoring chemical reactions

91 exam-style questions on OCR GCSE Chemistry Monitoring chemical reactions. Each one has a worked solution and a mark scheme showing where the marks go.