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    已知：
    O2(g) = O2+(g)+e－           △H1= +1175.7 kJ/mol
    PtF6－(g) =PtF6(g)+e－       △H2= +771.1 kJ/mol
    O2+(g)+PtF6－(g) =O2PtF6(s)   △H3= -482.2 kJ/mol
    则反应O2(g)+PtF6(g) = O2PtF6(s)的△H是
    [     ]
    A．77.6 kJ       
    B．-77.6 kJ/mol    
    C．+77.6kJ/mol    
    D．-886.8kJ/mol

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    已知：O2(g) = O2+(g)+e- △H1= +1175.7 kJ·mol-1
    PtF6-(g) =PtF6(g)+e- △H2= +771.1 kJ·mol-1
    O2+(g)+PtF6-(g) =O2PtF6(s) △H3= -482.2 kJ·mol-1
    则反应O2(g)+PtF6(g) = O2PtF6(s)的△H是
    [     ]
    A．77.6 kJ
    B．-77.6 kJ·mol-1
    C．+77.6kJ·mol-1
    D．-886.8kJ·mol-1

    查看答案和解析>>

    已知：O2(g) = O2+(g)+e－          H1=" +1175.7" kJ·mol-1
    PtF6－(g) =PtF6(g)+e－      H2=" +771.1" kJ·mol-1
    O2+(g)+PtF6－(g) =O2PtF6(S) H3=" -482.2" kJ·mol-1
    则反应O2(g)+PtF6(g) = O2PtF6 (s)的H是

    A．77.6 kJ B．-77.6 kJ·mol-1 C．+77.6kJ·mol-1D．-886.8kJ·mol-1

    查看答案和解析>>

    已知：O2(g) = O2+(g)+e－          H1=" +1175.7" kJ·mol-1
    PtF6－(g) =PtF6(g)+e－      H2=" +771.1" kJ·mol-1
    O2+(g)+PtF6－(g) =O2PtF6(S) H3=" -482.2" kJ·mol-1
    则反应O2(g)+PtF6(g) = O2PtF6 (s)的H是
    A．77.6 kJ B．-77.6 kJ·mol-1 C．+77.6kJ·mol-1D．-886.8kJ·mol-1

    查看答案和解析>>

    已知：O2(g) = O2+(g)+e－          H1=" +1175.7" kJ·mol-1
    PtF6－(g) =PtF6(g)+e－      H2=" +771.1" kJ·mol-1
    O2+(g)+PtF6－(g) =O2PtF6(S) H3=" -482.2" kJ·mol-1
    则反应O2(g)+PtF6(g) = O2PtF6 (s)的H是（  ）

    A．77.6 kJ B．-77.6 kJ·mol-1 C．+77.6kJ·mol-1D．-886.8kJ·mol-1

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