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No. It is reduced since it is a negative ion.
AgAg(s)-
Ag(s)
Ag(s)
S is oxidized by H2O2.PbS is turned into PbSO4.
Cu(s)
Cu(s)
FADH2 only
Mg(s) Apex baby
Fe + 2HCl --> FeCl2 + H2 Because the iron is being oxidized, giving an electron(s) to the reducing agent, chlorine ( Fe oxidized, FeCl2, reduced ). What you see above is a standard ionic reaction between a metal and a strong acid that produces a salt, iron chloride, and hydrogen gas.
4Al(s) + 3O2(g) --> 2Al2O3(s) where Al has an oxidation number of 3+
Cu is oxidized. The oxidation number goes from 0 in Cu to +2 in CuSO4. S is reduced. The oxidation number goes from +6 in H2SO4 to +4 in SO2. The oxidizing agent is H2SO4 since it causes Cu to be oxidized. The reducing agent is Cu since it causes S in H2SO4 to be reduced.