H2(g)+1/2 O2(g)=H2O(g) △H=-241.8 kj/mol
水蒸气冷凝成液态水要放热,1摩尔水是18克,所以生成1摩尔液态水多放热2.44kJ*18=43.92kJ,得到
H2(g)+1/2O2(g)=H2O(l)的△H= 285.72kJ/mol
H2(g)+1/2 O2(g)=H2O(g) △H=-241.8 kj/mol
水蒸气冷凝成液态水要放热,1摩尔水是18克,所以生成1摩尔液态水多放热2.44kJ*18=43.92kJ,得到
H2(g)+1/2O2(g)=H2O(l)的△H= 285.72kJ/mol