5．
炽热的炉膛内有反应：\(\rm{C(s)+O_{2}(g)=CO_{2}(g)\triangle H=-392kJ/mol}\)，往炉膛内通入水蒸气时，有如下反应：\(\rm{C(s)+H_{2}O(g)=CO(g)+H_{2}(g)\triangle H=+131kJ/mol}\)，\(\rm{CO(g)+ \dfrac {1}{2}O_{2}(g)=CO_{2}(g)\triangle H=-282kJ}\)，\(\rm{H_{2}(g)+ \dfrac {1}{2}O_{2}(g)=H_{2}O(g)\triangle H=-241kJ/mol}\)，由以上反应推断往炽热的炉膛内通入水蒸气时\(\rm{(}\) \(\rm{)}\)