For each of the following equations, identify which species is oxidized and reduced. Also identify the reducing agent and oxidizing agent. If the equation is not a reduction-oxidization equation, explain why.
A 2Na + Cl2 → 2NaCl
b. Pb(NO3)2 + 2NaCl → PbCl2 + 2NaNO3
c. 2PbS + 3O2 → 2SO2
