在\(m{1200℃}\)时，天然气脱硫工艺中会发生下列反应： \(m{H_{2}S(g)+ \dfrac {3}{2}O_{2}(g)═SO_{2}(g)+H_{2}O(g)\triangle H_{1}}\) \(m{2H_{2}S(g)+SO_{2}(g)═ \dfrac {3}{2}S_{2}(g)+2H_{2}O(g)\triangle H_{2}}\) \(m{H_{2}S(g)+ \dfrac {1}{2}O_{2}(g)═S(g)+H_{2}O(g)\triangle H_{3}}\) \(m{2S(g)═S_{2}(g)\triangle H_{4}}\) 则\(m{\triangle H_{4}}\)的正确表达式为\(m{(}\)　　\(m{)}\) --优优班--学霸训练营

在\(\rm{1200℃}\)时，天然气脱硫工艺中会发生下列反应：
\(\rm{H_{2}S(g)+ \dfrac {3}{2}O_{2}(g)═SO_{2}(g)+H_{2}O(g)\triangle H_{1}}\)
\(\rm{2H_{2}S(g)+SO_{2}(g)═ \dfrac {3}{2}S_{2}(g)+2H_{2}O(g)\triangle H_{2}}\)
\(\rm{H_{2}S(g)+ \dfrac {1}{2}O_{2}(g)═S(g)+H_{2}O(g)\triangle H_{3}}\)
\(\rm{2S(g)═S_{2}(g)\triangle H_{4}}\)
则\(\rm{\triangle H_{4}}\)的正确表达式为\(\rm{(}\)　　\(\rm{)}\)

A．\(\rm{\triangle H_{4}= \dfrac {2}{3}(\triangle H_{1}+\triangle H_{2}-3\triangle H_{3})}\)

B．\(\rm{\triangle H_{4}= \dfrac {2}{3}(3\triangle H_{3}-\triangle H_{1}-\triangle H_{2})}\)

C．\(\rm{\triangle H_{4}= \dfrac {3}{2}(\triangle H_{1}+\triangle H_{2}-3\triangle H_{3})}\)

D．\(\rm{\triangle H_{4}= \dfrac {3}{2}(\triangle H_{1}-\triangle H_{2}-3\triangle H_{3})}\)

【考点】用盖斯定律及有关计算

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难度：难

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