`{:((a), Pb(CH_(3)COO)_(2)(s) + 2HCl(aq) to PbCl_(2)(s) + CH_(3)COOH (aq),, " Double displacement reaction"),((b), 2Na(s) + 2C_(2)H_(5)OH (l) to 2C_(2)H_(5)ONa(l) + H_(2)(g),, " Displacement reaction"),((c), Fe_(2)O_(3)(s) + 3CO(g) to 2Fe(s) + 3CO_(2)(g),, " Redox reaction"),((d), 2H_(2)S(g) + O_(2)(g) to 2S(s) + 2H_(2)O(l),, " Redox reaction".):}`