Write net equations for the spontaneous redox reactions that occur during the following or none if there is no extensive reaction.
Manganese metal is added to a MgSO4 solution
NONE (RIGHT)
Copper metal is added to hydrochloric acid
2H^1+ +Cu -> H2 +Cu^2+ (WRONG)
A silver wire is added to nitric acid
2H^1+ + 2Ag -> H2 + 2Ag^1+ (WRONG)
Magnesium metal is added to water
Mg +H2O -> H2 + MgO (WRONG)
Can some one help me with the last three? I cant figure out how to do them
I basically tried using the half reactions but it wasnt right...