己知:HCN(aq)与NaOH(aq)反应的△H=-12.1kJ/moL;HCl
题型:选择题
问题:
己知:HCN(aq)与NaOH(aq)反应的△H=-12.1kJ/moL;HCl(aq)与NaOH(aq)反应的△H=-55.6kJ/moL.则HCN在水溶液中电离的△H等于( )
A.-67.7kJ/moL
B.-43.5kJ/moL
C.+43.5kJ/moL
D.+67.7kJ/moL
己知:HCN(aq)与NaOH(aq)反应的△H=-12.1kJ/moL;HCl(aq)与NaOH(aq)反应的△H=-55.6kJ/moL.则HCN在水溶液中电离的△H等于( )
A.-67.7kJ/moL
B.-43.5kJ/moL
C.+43.5kJ/moL
D.+67.7kJ/moL