WAEC - Chemistry (2006 - No. 17)
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?
3
4
5
6
Explication
2AL(s) + 6H +(aq) → 2AL3+(aq) + 3H2(g). One aluminium atom transfers 3 electrons :. Two aluminium atoms will transfer 2x3=6 electrons