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Consider the reaction: 2AI(s) + 6H+

Consider the reaction: 2AI(s) + 6H+ (aq) → 2AI3+ (aq) + 3H2(g). What is the total number of moles of electrons transferred from the aluminium atoms to the hydrogen ions?

A.

3

B.

4

C.

5

D.

6

View answer & explanation

Correct answer is D

2AL(s) + 6H +(aq) → 2AL3+(aq) + 3H2(g). One aluminium atom transfers 3 electrons :. Two aluminium atoms will transfer 2x3=6 electrons

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