怎样制取HF,HCl(气体),HBr,HI?
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:化学作业 时间:2024/07/28 05:15:31
怎样制取HF,HCl(气体),HBr,HI?
![怎样制取HF,HCl(气体),HBr,HI?](/uploads/image/z/18372802-58-2.jpg?t=%E6%80%8E%E6%A0%B7%E5%88%B6%E5%8F%96HF%2CHCl%EF%BC%88%E6%B0%94%E4%BD%93%EF%BC%89%2CHBr%2CHI%3F)
CaF2+H2SO4=CaSO4+2HF↑(铅皿)
制取Hcl,HBr,HI和HF不一样
原理:高沸点酸制取低沸点酸(或加热挥发)
药品:固体可溶性卤盐固体+浓硫酸(浓磷酸)
NaCl(s)+H2SO4(浓)=NaHSO4+HCl↑(微热)
NaCl(s)+NaHSO4= Na2SO4+HCl↑(强热)
NaCl(s)+H2SO4(浓)=Na2SO4+2HCl↑(强热)
NaBr(s)+H2SO4(浓)=NaHSO4+HBr↑(微热)
NaBr(s)+H3PO4(浓)=NaH2PO4+HBr↑(Δ)
NaI(s)+H3PO4(浓)=NaH2PO4+HI↑(Δ)
制取Hcl,HBr,HI和HF不一样
原理:高沸点酸制取低沸点酸(或加热挥发)
药品:固体可溶性卤盐固体+浓硫酸(浓磷酸)
NaCl(s)+H2SO4(浓)=NaHSO4+HCl↑(微热)
NaCl(s)+NaHSO4= Na2SO4+HCl↑(强热)
NaCl(s)+H2SO4(浓)=Na2SO4+2HCl↑(强热)
NaBr(s)+H2SO4(浓)=NaHSO4+HBr↑(微热)
NaBr(s)+H3PO4(浓)=NaH2PO4+HBr↑(Δ)
NaI(s)+H3PO4(浓)=NaH2PO4+HI↑(Δ)