Rewrite the following as two half equation indicating which represents oxidation and reduction?

oxidation: zn(s) ---> zn^(2+) + 2e-
reduction: 2H+1 & 2 e- ---> H2


oxidation: 2Mg ----> 2mg+2 & 4e-
reduction: O2 & 4 e- ---> 2 O-2


use oxidation numbers to identify the oxidizing agent and reducing agent

oxidizing agent: cu+2 & 2 e- ---> Cu^o
reducing agent: H2^o --> 2H+ & 2 e-

A) Hydrogen is being decreased, Carbon is being oxidized, Hydrogen is the oxidizing agent, Carbon is the reducing agent B) Copper is being oxidized, Silver is being decreased, Copper is the reducing agent, Silver is the oxidizing agent C) Zinc is being oxidized, Hydrogen is being decreased, Zinc is the reducing agent, Hydrogen is the oxidizing agent D) uncertain. i do no longer think of that's one. :P