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3.3 Yield and atom economy of chemical reactions

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Question 20

H

Aluminium reacts with chlorine to form aluminium chloride.

$2Al+3Cl2→2AlCl3\mathrm{2Al + 3Cl_2 \rightarrow 2AlCl_3}$

Relative atomic masses ( $A_r$ ): Al = 27, Cl = 35.5

In an experiment, 5.4 g of aluminium produced 20.0 g of aluminium chloride.

What is the percentage yield of aluminium chloride?

[1]

A

27.0 %

B

49.9 %

C

74.9 %

D

112 %

Markscheme

3.3 Yield and atom economy of chemical reactions Questions

GCSE
Chemistry
3.3 Yield and atom economy of chemical reactions

39 exam-style questions on AQA GCSE Chemistry 3.3 Yield and atom economy of chemical reactions, covering 3.3.1a Percentage yield, 3.3.1b Theoretical mass of a product, 3.3.2a Atom economy, and 3.3.2b Choosing a reaction pathway. Each one has a worked solution and a mark scheme showing where the marks go.

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