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3.2 Use of amount of substance in relation to masses of pure substances

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Question 24

Sulfur trioxide is made by reacting sulfur dioxide with oxygen.

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

Relative atomic masses (ArA_rAr​): O=16\text{O} = 16O=16, S=32\text{S} = 32S=32

A reactor contains 0.75 mol of oxygen, which reacts completely with sulfur dioxide.

What mass of sulfur trioxide is produced?

[1]
A

24 g24\ \text{g}24 g

B

60 g60\ \text{g}60 g

C

30 g30\ \text{g}30 g

D

120 g120\ \text{g}120 g

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3.2 Use of amount of substance in relation to masses of pure substances Questions

  1. GCSE
  2. /Chemistry
  3. /3.2 Use of amount of substance in relation to masses of pure substances

131 exam-style questions on AQA GCSE Chemistry 3.2 Use of amount of substance in relation to masses of pure substances, covering 3.2.1 Moles, 3.2.2 Amounts of substances in equations, 3.2.3 Using moles to balance equations, 3.2.4 Limiting reactants, 3.2.5a Concentration of solutions, and 3.2.5b Relating mass, volume and concentration. Each one has a worked solution and a mark scheme showing where the marks go.

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