When the following redox equation is balanced with smallest whole number coefficients, the coefficient for the hydrogen sulfate (HSO4-) ion will be ______ .

Question

Al + HSO4- + OH- --> Al2O3 + S2- + H2O (basic solution)

Answer 1

Here are rules for balancing redox equations but if you will tell me where you are stuck I can help you through that part.
http://www.chemteam.info/Redox/Redox.html