A.N2H4(g)+2H2O2(l)= N2(g)+4H2O(l)ΔH=-817.63 kJ·mol-1 |
B.N2H4(g)+2H2O2(l)= N2(g)+4H2O(g)ΔH=-817.63 kJ·mol-1 |
C.N2H4(g)+2H2O2(l)= N2(g)+4H2O(l)ΔH=-641.63 kJ·mol-1 |
D.N2H4(g)+2H2O2(l)= N2(g)+4H2O(g)ΔH=-641.63 kJ·mol-1 |
A.488.3 kJ/mol | B.-488.3 kJ/mol | C.-244.15 kJ/mol | D.244.15 kJ/mol |
化学键 | C-C | C-H | H-H | C-O | CO | H-O |
键能/kJ·mol-1 | 348 | 413 | 436 | 358 | 1072 | 463 |
A. | B. | C. | D. |
A.吸热88kJ | B.吸热2.44J | C.放热44kJ | D.吸热44kJ |
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