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(资料图)
1、A.氯气 Cl2+SO2+2H2O=2HCl+H2SO4 , H2SO4与氯化钡生成硫酸钡沉淀 B.氨气 2NH3+SO2+H2O=(NH4)2SO3 (NH4)2SO3与氯化钡生成亚硫酸钡沉淀 C.二氧化碳 不能 CO2+H2O+BaCl2不能生成碳酸钡和盐酸。
2、后两者反应。
3、不可弱酸制强酸。
4、D.硫化氢 SO2 +2H2S =3S (沉淀)+2H2O。
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