Question

Determine if the highlighted element in the first compound of each reaction was oxidized or reduced....

Determine if the highlighted element in the first compound of each reaction was oxidized or reduced.
(a) Mg(s) + NiCl2(aq) ⟶ MgCl2(aq) + Ni(s)
(b) PCl3(l) + Cl2(g) ⟶ PCl5(s)
(c) C2 H4(g) + 3O2(g) ⟶ 2CO2(g) + 2H2 O(g)
(d) Zn(s) + H2 SO4(aq) ⟶ ZnSO4(aq) + H2(g)
(e) 2K2 S2 O3(s) + I2(s) ⟶ K2 S4 O6(s) + 2KI(s)
(f) 3Cu(s) + 8HNO3(aq) ⟶ 3Cu(NO3)2(aq) + 2NO(g) + 4H2 O(l)

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