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.+92.3kJ | 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.+92.3kJ | D.+92.3kJ·mol-1 |