有关O2gA的精选大全

 已知:Fe(s)+O2(g)===FeO(s) ΔH1=-272kJ/mol2Al(s)+O2(g)===A...
问题详情: 已知:Fe(s)+O2(g)===FeO(s)ΔH1=-272kJ/mol2Al(s)+O2(g)===Al2O3(s)ΔH2=-1675kJ/mol则2Al(s)+3FeO(s)===Al2O3(s)+3Fe(s)的ΔH是(    )A.+859kJ/mol             B.-859kJ/mol   C.-1403kJ/mol  ...
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