(1)①2H2(g)+O2(g)=2H2O (g) △H=-483.6kJ/mol(2分)②463.4(1分)
(2)C(s)+H2O(g)
CO(g)+H2(g)(1分,不标状态不扣分,写成等号不给分)
(3)=(1分);A(1分)(4)①>(1分)②CD(1分)
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(1)①2H2(g)+O2(g)=2H2O (g) △H=-483.6kJ/mol(2分)②463.4(1分)
(2)C(s)+H2O(g)
CO(g)+H2(g)(1分,不标状态不扣分,写成等号不给分)
(3)=(1分);A(1分)(4)①>(1分)②CD(1分)
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