5 marksReactivity and Extraction of Metals

CSEC Chemistry · May/June 2017 · Paper 2 · Question 6(a)(ii)

In solution, two metals A and B form A⁺ and B²⁺ ions respectively. Metal A displaces Fe from a solution containing Fe²⁺ ions but metal B does NOT.

Metal A is placed in a solution of copper(II) sulfate, CuSO₄ (aq). Write an equation for the reaction. State ONE observable change that will occur and explain why this reaction takes place.

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6(a)(i)Arrange the metals A, B and Fe in order of reactivity from LEAST reactive to MOST reactive. Write a balanced chemical equation to show the reaction between…[4 marks]
6(a)(iii)For EACH metal, A and B, state ONE method that can be used to extract it from its respective oxide. Give a reason for EACH answer.[4 marks]
6(b)Metal alloys are often used for making objects found in our daily lives. Name an alloy of iron and state ONE of its uses.[2 marks]

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