2Als32O2的知识精选

已知下列数据:Fe(s)+1/2O2(g)=FeO(s) ΔH=-272kJ/mol;2Al(s)+3/2O2...
问题详情:已知下列数据:Fe(s)+1/2O2(g)=FeO(s) ΔH=-272kJ/mol;2Al(s)+3/2O2(g)=Al2O3(s) ΔH=-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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