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2 marksReactivity and Extraction of Metals

CSEC Chemistry · May/June 2011 · Paper 2 · Question 5(a)(i)

Experiments I and II determined the relative reactivity of iron, copper, and an unknown Metal X (valency 2). Experiment I: Metal X in copper(II) sulphate solution resulted in copper plating and solution decolorization. Experiment II: Metal X in iron(II) sulphate solution showed no change.

Use the information given to place Metal X, copper and iron in the order in which they will appear in the reactivity series, starting with the MOST reactive.

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Other parts of this question

  1. 5(a)(ii)Write an ionic equation for the reaction between Metal X and copper(II) sulphate. Include the relevant state symbols.[2 marks]
  2. 5(b)(i)What is an alloy?[1 mark]
  3. 5(b)(ii)Name the alloy of copper and aluminium.[1 mark]
  4. 5(b)(iii)State TWO properties of aluminium that make the alloy in (b) (ii) a good choice to be used in the manufacture of aircraft.[3 marks]
  5. 5(b)(iv)List TWO other uses of this alloy.[2 marks]
  6. 5(c)Calculate the mass of copper produced if 0.12 dm³ of nitrogen is produced at room temperature and pressure (rtp). (Relative atomic mass of Cu = 64; One mole of…[4 marks]

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