2H2(g) + O2 (g) = 2H2O(l) △H = - 571.6 kJ/mol△H = - 571.6 kJ/mol 这里的单位是千焦每摩尔,应该就是每摩尔氢气完全燃烧放出的热量吧,为什么氢气的燃烧热又是285.8kJ/mol.
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![2H2(g) + O2 (g) = 2H2O(l) △H = - 571.6 kJ/mol△H = - 571.6 kJ/mol 这里的单位是千焦每摩尔,应该就是每摩尔氢气完全燃烧放出的热量吧,为什么氢气的燃烧热又是285.8kJ/mol.](/uploads/image/z/3543979-67-9.jpg?t=2H2%28g%29+%2B+O2+%28g%29+%3D+2H2O%28l%29+%E2%96%B3H+%3D+-+571.6+kJ%2Fmol%E2%96%B3H+%3D+-+571.6+kJ%2Fmol+%E8%BF%99%E9%87%8C%E7%9A%84%E5%8D%95%E4%BD%8D%E6%98%AF%E5%8D%83%E7%84%A6%E6%AF%8F%E6%91%A9%E5%B0%94%2C%E5%BA%94%E8%AF%A5%E5%B0%B1%E6%98%AF%E6%AF%8F%E6%91%A9%E5%B0%94%E6%B0%A2%E6%B0%94%E5%AE%8C%E5%85%A8%E7%87%83%E7%83%A7%E6%94%BE%E5%87%BA%E7%9A%84%E7%83%AD%E9%87%8F%E5%90%A7%2C%E4%B8%BA%E4%BB%80%E4%B9%88%E6%B0%A2%E6%B0%94%E7%9A%84%E7%87%83%E7%83%A7%E7%83%AD%E5%8F%88%E6%98%AF285.8kJ%2Fmol.)
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