已知:C(s)+H2O(g)CO(g)+H2(g) ΔH =" +130" kJ·mol-1
2C(s)+O2(g)2CO(g) ΔH="a" kJ·mol-1
H—H、OO和O—H键的键能分别为436 kJ·mol-1、496 kJ·mol-1和462 kJ·mol-1,则a为
A.-332 | B.-118 | C.-220 | D.+350 |
已知:C(s)+H2O(g)CO(g)+H2(g) ΔH =" +130" kJ·mol-1
2C(s)+O2(g)2CO(g) ΔH="a" kJ·mol-1
H—H、OO和O—H键的键能分别为436 kJ·mol-1、496 kJ·mol-1和462 kJ·mol-1,则a为
A.-332 | B.-118 | C.-220 | D.+350 |