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．―184.6kJ·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．―184.6kJ·mol—1 | D．―92.3kJ·mol—1 |
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