NaCl+H2SO4=加热=NaHSO4+HCl↑HCl在加热的过程中可能少量分解生成氢气与氯气
NaCl+H2SO4=加热=NaHSO4+HCl↑或2NaCl+H2SO4=加热=Na2SO4+2HCl↑
2NaCl+浓H2SO4=加热=Na2SO4+2HCl气体符号