Answer to Question #349251 in General Chemistry for Chris

Question

Balance the each of the following half-reactions and write the net-equation               

Al3+ (aq) + 3e- → Al (s)     and   Sn2+ (aq) + 2e- → Sn(s)

Answer 1

net-equation:

AlCl₃ + Sn = SnCl₂ + Al

Half-reaction:

Al³⁺ + 3 e^- => Al

Sn – 2 e^- => Sn²⁺

Balaned reaction:

2AlCl₃ + 3Sn = 3SnCl₂ + 2Al