Give the oxidation number (charge) of P in H3PO4=
Give the oxidation number (charge) of O in H2O2=
Directions: In each of the following equations, indicate the element that has been oxidized and the one that has been reduced.
2 Na + FeCl⬇2 = 2 NaCl + Fe
2 C⬇2H⬇2 + 5 O⬇2 = 4 CO⬇2 + 2 H⬇2O
2 PbS + 3 O⬇2 = 2 SO⬇ 2 + 2 PbO
2 H⬇2 + O ⬇2 = 2 H⬇2 O
Cu + HNO⬇3 = CuNO ⬇ 3 + H⬇2
AgNO⬇3 + Cu = CuNO⬇3 + Ag
oxidized: Na, C, S, H2, Cu.
Fe, O2, H, Ag.