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Atoms and reactions

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Question 10
84%

At a constant temperature and pressure, 80 cm3 of carbon monoxide gas reacts completely with 40 cm3 of oxygen gas to produce 80 cm3 of a gaseous carbon oxide.

Which equation represents this reaction?

A

CO(g)+O2(g)→CO3(g)\text{CO(g)} + \text{O}_2\text{(g)} \rightarrow \text{CO}_3\text{(g)}CO(g)+O2​(g)→CO3​(g)

B

4CO(g)+O2(g)→2C2O3(g)4\text{CO(g)} + \text{O}_2\text{(g)} \rightarrow 2\text{C}_2\text{O}_3\text{(g)}4CO(g)+O2​(g)→2C2​O3​(g)

C

2CO(g)+O2(g)→2CO2(g)2\text{CO(g)} + \text{O}_2\text{(g)} \rightarrow 2\text{CO}_2\text{(g)}2CO(g)+O2​(g)→2CO2​(g)

D

2CO(g)+3O2(g)→2CO4(g)2\text{CO(g)} + 3\text{O}_2\text{(g)} \rightarrow 2\text{CO}_4\text{(g)}2CO(g)+3O2​(g)→2CO4​(g)

Markscheme

Atoms and reactions Questions

  1. A Level
  2. /Chemistry
  3. /Atoms and reactions

199 exam-style questions on OCR A A Level Chemistry Atoms and reactions, covering Atomic structure and isotopes, Compounds, formulae and equations, Amount of substance, Acids, and Redox. Each one has a worked solution and a mark scheme showing where the marks go.

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