摘要:5.下列热化学方程式书写正确的是 ( ) V2O5 A.2SO2+O2======2SO3,ΔH=-196.6kJ/mol B.H2(g)+O2(g)=H2O (1),ΔH=-285.8kJ/mol C.2H2(g)+O2(g)=2H2O (1),ΔH =-571.6kJ D.C(s)+O2(g)=CO2(g),ΔH= +393.5kJ/mol
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