Write down the equations for the reactions of dilute sulfuric acid with metal, metal oxide and salt, concentrated sulfuric

Write down the equations for the reactions of dilute sulfuric acid with metal, metal oxide and salt, concentrated sulfuric acid with copper. Determine the oxidation states and indicate the oxidizing agent and reducing agent.

1.H2So4 + Cu = CuSo4 + H2
2.H2So4 + H2O + Zn = ZnSo4 + H3O + H
3.H2So4 + ZnO + H2O = ZnSo4 + H3O + OH
4.H2So4 + NaCl + H2O = H2Cl + NaSo4 + H2O
Or you can take regular magnesium
Mg + H2SO4 = MgSO4 + H2
Mg (0) -2e = Mg (+2) reducing agent
2H (+) + 2e = H2 (0) oxidizing agent
MgO + H2SO4 = MgSO4 + H2O
Mg (OH) 2 + H2SO4 = MgSO4 + 2H2O