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4.1 Reactivity of metals

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Question 4
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Copper oxide is heated in a stream of hydrogen gas. The equation for the reaction is CuO(s)+H2(g)→Cu(s)+H2O(l)\text{CuO}(s) + \text{H}_2(g) \rightarrow \text{Cu}(s) + \text{H}_2\text{O}(l)CuO(s)+H2​(g)→Cu(s)+H2​O(l). Which statement describes the oxidation and reduction in this reaction?

[1]
A

Copper oxide is oxidised as it loses oxygen, and hydrogen is reduced as it gains oxygen.

B

Copper oxide is reduced as it loses oxygen, and hydrogen is also reduced as it removes oxygen.

C

Copper oxide is reduced as it loses oxygen, and water is oxidised because it contains oxygen.

D

Copper oxide is reduced as it loses oxygen, and hydrogen is oxidised as it gains oxygen.

Markscheme

4.1 Reactivity of metals Questions

  1. GCSE
  2. /Chemistry
  3. /4.1 Reactivity of metals

86 exam-style questions on AQA GCSE Chemistry 4.1 Reactivity of metals, covering 4.1.1 Metal oxides, 4.1.2 The reactivity series, 4.1.3 Extraction of metals and reduction, and 4.1.4 Oxidation and reduction in terms of electrons. Each one has a worked solution and a mark scheme showing where the marks go.

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