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A．已知\(\rm{2H_{2}(g)+O_{2}(g)=2H_{2}O(g)\triangle H=-483.6 kJ⋅mol^{-1}}\)，则氢气的燃烧热为\(\rm{241.8 kJ⋅mol^{-1}}\) |
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B．已知\(\rm{NaOH(aq)+HCl(aq)=NaCl(aq)+H_{2}O(l)\triangle H=-57.3 kJ⋅mol^{-1}}\)，则含\(\rm{40.0g NaOH}\)的稀溶液与稀醋酸完全中和，放出小于\(\rm{57.3kJ}\)的热量 |
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C．己知\(\rm{2C(s)+2O_{2}(g)=2CO_{2}(g)\triangle H=a}\)；\(\rm{2C(s)+O_{2}(g)=2CO(g)}\)；\(\rm{\triangle H=b}\)，则\(\rm{a > b}\) |
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D．已知\(\rm{C(}\)石墨，\(\rm{s)=C(}\)金刚石，\(\rm{s)\triangle H > 0}\)，则石墨比金刚石稳定 |