A.+ 488.3 kJ/mol | B.-488.3 kJ/mol |
C.-244.15 kJ/mol | D.+ 244.15 kJ/mol |
A.+882kJ·mol-1 | B.+441kJ·mol-1 | C.-882kJ·mol-1 | D.-441kJ·mol-1 |
A.Na+(g)+Cl-(g)―→NaCl(s);△Q |
B.Na(s)+Cl2(g)―→NaCl(s);△Q1 |
C.Na(s)―→Na(g);△Q2 |
D.Na(g)-e-―→Na+(g);△Q3 |
A.石墨燃烧生成CO气体的热化学方程式为: 2C(石墨)+O2(g)=2CO(g)△H=-110.5kJ/mol |
B.C(石墨)不完全燃烧,生成CO2和CO两种气体时,可放热283.0kJ |
C.C(石墨)和CO2(g)反应生成CO(g)的反应是吸热反应 |
D.若金刚石的燃烧生成CO2气体放出的热量大于石墨,则石墨变成金刚石的变化是放热反应 |
A.①③ | B.②④ | C.②③④ | D.①②③ |
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