(1)2KMnO 4
K 2MnO 4+MnO 2+O 2↑A;C或E;(2)用止水夹夹紧橡皮管,再向长颈漏斗内注水,观察液面是否有变化.(3)H 2O、CO 2;F、G;ahigf;NH 4HCO 3
NH 3↑+H 2O+CO 2↑
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