Abcd是中学化学中常见的单质。
(1)Al(OH)3+OH-= = = AlO 2-+2H 2o；2氯化钠(熔融)2钠+氯2 =
(2)CaC 2+2H 2o→C2 H2 ↑+ Ca(OH)2；2C 2h 2(g)+5O 2(g)= = 4CO 2(g)+2H 2o(l)△H =-2 600 kJ mol-1；文书主任(HCO 3 ) 2
(2)CaC 2+2H 2o→C2 H2 ↑+ Ca(OH)2；2C 2h 2(g)+5O 2(g)= = 4CO 2(g)+2H 2o(l)△H =-2 600 kJ mol-1；文书主任(HCO 3 ) 2