Caitheriputer Caitheriputer

30-05-2016
Chemistry

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Given the balanced ionic equation representing a reaction:
2A1(s) + 3Cu2+(aq) ==>2A13+(aq) + 3Cu(s)
Which half-reaction represents the reduction that occurs?(I ) Al ==> Al3+ + 3e-
(2) Al3+ + 3e- ==>Al
(3) Cu ==> Cu2+ + 2e-
(4) Cu2+ + 2e- ==>Cu

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isaackz97 isaackz97

03-06-2016

the answer should be (4)

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