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3.3 Yield and atom economy of chemical reactions

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Question 12

An experiment uses sulfur in excess. A 5.60 g sample of iron reacts completely to make iron sulfide.

$Fe+S→FeS\mathrm{Fe + S \rightarrow FeS}$

Relative atomic masses ( $A_r$ ): Fe = 56, S = 32

What is the maximum theoretical mass of iron sulfide that can be made?

[1]

$g3.20\ \text{g}$

$g8.80\ \text{g}$

$g3.56\ \text{g}$

$g15.4\ \text{g}$

Markscheme

3.3 Yield and atom economy of chemical reactions Questions

GCSE
Chemistry
3.3 Yield and atom economy of chemical reactions

104 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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