Reaction help!!!!?

Question

Use this reaction for the following questions: 2Al + 3H2SO4 --> Al2(SO4)3 + 3H2
a.Determine the oxidation numbers of each element in both the reactions and the products of this oxidation reduction reaction of aluminum and sulfuric acid.
b.Which element is oxidized in this reaction?
c.Which element is reduced in this reaction?

Answer 1

a) The oxidation states change as follows:

Al goes from zero to +3
H goes from +1 to zero
S stays at +6
O stays at -2

b) Aluminum loses electrons, so it is oxidized.

c) Hydrogen gains electrons, so it is reduced.