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Carboxylic acids and derivatives (A-level only)

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Question 7

Propanophenone can be prepared by the reaction between propanoyl chloride and benzene:

CH3CH2COCl+C6H6→C6H5COCH2CH3+HCl \text{CH}_3\text{CH}_2\text{COCl} + \text{C}_6\text{H}_6 \rightarrow \text{C}_6\text{H}_5\text{COCH}_2\text{CH}_3 + \text{HCl} CH3​CH2​COCl+C6​H6​→C6​H5​COCH2​CH3​+HCl

In a preparation, with an excess of benzene, the mass of propanoyl chloride (Mr=92.5M_{\text{r}} = 92.5Mr​=92.5) used was 7.4 × 10-2 kg.

The percentage yield of propanophenone was 70%.

What mass, in grams, of propanophenone was produced?

A

52 g52\text{ g}52 g

B

75 g75\text{ g}75 g

C

107 g107\text{ g}107 g

D

134 g134\text{ g}134 g

Markscheme

Carboxylic acids and derivatives (A-level only) Questions

  1. A Level
  2. /Chemistry
  3. /Carboxylic acids and derivatives (A-level only)

22 exam-style questions on AQA A Level Chemistry Carboxylic acids and derivatives (A-level only), covering Carboxylic acids and esters (A-level only) and Acylation (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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