NaCl+H2SO4(浓)==(加热)==NaHSO4+HCl(气体)注意,得到的是NaHSO4而不是Na2SO4
氯化钠和硫酸反应不放热,是吸热反应。H2SO4(浓)+NaCl=微热=HCl↑+NaHSO4H2SO4(浓)+2NaCl=△= 2HCl↑+Na2SO4
会,生成硫酸钠和盐酸
2NaCl+H2SO4=2HCl+Na2SO4
NaCl+H2SO4…微热…NaHSO4+HCl2NaCl+H2SO4…强热…Na2SO4+2HCl