• 2022-07-02
    反应B→A和B→C的摩尔焓变分别为△rHm,1和△rHm,2,则反应A→C的摩尔焓变△rHm,3应是()
    A: △rHm,₁+△rHm2,
    B: △rHm,₂-△rHm,₁
    C: △rHm,₁-△rHm,₂
    D: △rHm,₁-△rHm,2