Balance the following redox equation using the oxidation number change method. Describe each step that is involved: Al(s) + PbSO4 - - > Al2(SO4)3 + Pb(s)

Answer 1

And what are you stuck on?
http://www.chemteam.info/Redox/Redox-Rules.html

Answer 2

Google It

Answer 3

It's a bit tough showing the oxidation number method in this format. Here's the half reaction format...
2Al^o => 2Al^+3 + 2(3e^-)
3Pb^+2 + 3(2e^-) => 3Pb^o
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2Al^o + 3Pb^+2 => 2Al^+3 + 3Pb^o