来自郭志斌的问题
已知下列热化学方程式:①H2(g)+12O2(g)═H2O(l)△H=-285.8kJ/mol②H2(g)+12O2(g)═H2O(g)△H=-241.8kJ/mol③C(s)+12O2(g)═CO(g)△H=-110.5kJ/mol④C(s)+O2(g)═CO2(g)△H=-393.5kJ/mol回答
已知下列热化学方程式:
①H2(g)+12O2(g)═H2O(l)△H=-285.8kJ/mol
②H2(g)+12O2(g)═H2O(g)△H=-241.8kJ/mol
③C(s)+12O2(g)═CO(g)△H=-110.5kJ/mol
④C(s)+O2(g)═CO2(g)△H=-393.5kJ/mol
回答下列问题:
(1)上述反应中属于放热反应的是______.
(2)H2的燃烧热为______;C的燃烧热为______.
(3)燃烧10g H2生成液态水,放出的热量为______.
(4)CO的燃烧热为______;其热化学方程式为CO(g)+12O2(g)=CO2(g)△=-283.0kJ/mol
CO(g)+12O2(g)=CO2(g)△=-283.0kJ/mol
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1回答
2020-10-24 20:27