题目内容
由N2和H2每生成1 mol NH3放热46.02 kJ, 而生成1 mol H2N-NH2却吸热96.26 kJ,又知H-H键能为436 kJ/mol,N2三键能为945 kJ/mol,求: (1) N-H键的键能; (2) N-N单键的键能
A157 kJ/mol, 391 kJ/mol;
B391 kJ/mol, 257 kJ/mol;
C291 kJ/mol, 157 kJ/mol;
D391 kJ/mol, 157 kJ/mol
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