已知H2(g)+Cl2(g)=2HCl(g),△H=-184.6kJ·mol-1,则反应HCl(g)=1/2H2(g)+1/2Cl2(g)的△H为……( )
A.+184.6kJ·mol-1 | B.-92.3kJ·mol-1 | C.-369.2kJ·mol-1 | D.+92.3kJ·mol-1 |
已知H2(g)+Cl2(g)=2HCl(g),△H=-184.6kJ·mol-1,则反应HCl(g)=1/2H2(g)+1/2Cl2(g)的△H为……( )
A.+184.6kJ·mol-1 | B.-92.3kJ·mol-1 | C.-369.2kJ·mol-1 | D.+92.3kJ·mol-1 |