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O-LevelChemistryMetals & Reactivity5070/11 · May/June 2011 · Q301 Mark

Aluminium is higher than copper in the reactivity series so the following displacement reaction should be feasible. 2Al(s) + 3CuSO4(aq) → Al2(SO4)3(aq) + 3Cu(s) The reaction does not take place at room temperature. What is the reason for this?

AAluminium has an inert coating all over it.
BThe compound aluminium sulfate does not exist.
CThe reaction is exothermic.
DThe reaction needs to be warmed to take place.

✓ Correct answer

A: Aluminium has an inert coating all over it.

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About this question

Topic
Metals & Reactivity, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source
O-Level Chemistry, May/June 2011 Paper 1 Variant 1, question 30.

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