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