例2配平下列方程式-|||-① __ S+ __ KOH __ K2S+ __ K2SO3+ () __ H2O ()-|||-MnO2-|||-② __ KClO3 KCl+ __ O2↑-|||-③ __ (I)_(2)+ __ xlongequal (Delta ) __ NaCl+ __ (O)_(3)+ __-|||-H2O ()-|||-④ __ (NH4)2SO4 = NH3↑+ __ (O)_(2)4+() N2↑-|||-+ __ H2O ()-|||-⑤ __ Fe+ __ HNO3(浓)= ((N{O)_(3))}_(3)+ __ NO2↑-|||-+ __ H2O ()