chem hw

using standard reduction potentials, determine whether the ff. reactions are spontaneous under standard conditions.

1. Cu(s) + 2H+(aq) --> Cu(2+)(aq) + H2(g)
2.Cl2(g)+ 2I-(aq)--> 2Cl-(aq)+I2(s)
3. I2(s) + 5Cu2+(aq)+ 6H2O(l) -->2IO3(-1) (aq) + 5Cu(s) + 12H+(aq)
4. Hg(2+)(aq) + 2I-(aq) --> Hg(l) +I2(s)
5. H2So3(aq) + 2Mn(s) + 4H+ (aq) --> S(s) + 2Mn(2+)(aq) +3H2O(l)