已知：O2(g) = O2+(g)+e－H1=" +1175.7" kJ·mol-1PtF6－(g) =PtF6(g)+e－H2=" +771.1" kJ·mol-1O2+(g)+PtF6

题干

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

上一题下一题 0.0难度选择题更新时间:2013-03-03 12:01:55

B