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
H1=" +1175.7" kJ·mol-1PtF6－(g) =PtF6(g)+e－
H2=" +771.1" kJ·mol-1O2+(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
答案(点此获取答案解析）
B
