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3.3 Yield and atom economy of chemical reactions

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Question 5

In an experiment, 12.8 g of sulfur dioxide reacted with an excess of oxygen.

2SO2+O2→2SO32\text{SO}_2 + \text{O}_2 \rightarrow 2\text{SO}_32SO2​+O2​→2SO3​

The percentage yield of sulfur trioxide was 85.0 %.

Relative atomic masses: O=16\text{O} = 16O=16, S=32\text{S} = 32S=32.

What mass of sulfur trioxide was collected?

[1]
A

13.6 g13.6\ \text{g}13.6 g

B

18.8 g18.8\ \text{g}18.8 g

C

10.9 g10.9\ \text{g}10.9 g

D

6.80 g6.80\ \text{g}6.80 g

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3.3 Yield and atom economy of chemical reactions Questions

  1. GCSE
  2. /Chemistry
  3. /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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