己知:2Zn (s)+O2(g)=2ZnO (s); ΔH=-701.0kJ·mol-12Hg(l)+O2(g...
问题详情:
己知:2Zn (s)+O2(g)=2ZnO (s); ΔH= -701.0 kJ·mol-1
2Hg(l)+O2(g)=2HgO (s); ΔH= -181.6 kJ·mol-1
则反应Zn (s) +HgO(s)=ZnO (s) + Hg(l) 的ΔH为( )
A. +519.4 kJ·mol-1 B.+259.7 kJ·mol-1 C.-259.7 kJ·mol-1 D.-519.4 kJ·mol-1
【回答】
C
知识点:燃烧热和中和热
题型:选择题