已知：\(m{Fe_{2}O_{3}(s)+ \dfrac {3}{2}C(s)= \dfrac {3}{2}CO_{2}(g)+2Fe(s)\triangle H=+234.1kJ⋅mol^{-1}}\) \(m{C(s)+O_{2}(g)=CO_{2}(g)\triangle H=-393.5kJ⋅mol^{-1}}\) 则\(m{2Fe(s)+ \dfrac {3}{2}O_{2}(g)=Fe_{2}O_{3}(s)}\)的\(m{\triangle H}\)是\(m{(}\)　　\(m{)}\) --优优班--学霸训练营

已知：\(\rm{Fe_{2}O_{3}(s)+ \dfrac {3}{2}C(s)= \dfrac {3}{2}CO_{2}(g)+2Fe(s)\triangle H=+234.1kJ⋅mol^{-1}}\)
\(\rm{C(s)+O_{2}(g)=CO_{2}(g)\triangle H=-393.5kJ⋅mol^{-1}}\)
则\(\rm{2Fe(s)+ \dfrac {3}{2}O_{2}(g)=Fe_{2}O_{3}(s)}\)的\(\rm{\triangle H}\)是\(\rm{(}\)　　\(\rm{)}\)

A．\(\rm{-824.4kJ⋅mol^{-}}\)

B．\(\rm{-627.6kJ⋅mol^{-1}}\)

C．\(\rm{-744.7kJ⋅mol^{-1}}\)

D．\(\rm{-169.4kJ⋅mol^{-1}}\)

【考点】用盖斯定律及有关计算

【分析】请登陆后查看

【解答】请登陆后查看

难度：较易

收藏试题篮