已知:2Zn(s)+O2(g)=2ZnO(s) △H=-701.0kJ·mol-1
2Hg(l)+O2(g)=2HgO(s) △H=-181.6kJ·mol-1
则反应Zn(s)+ HgO(s)=ZnO(s)+ Hg(l)的△H为( )
A.-259.7 kJ·mol-1 | B.-519.4kJ·mol-1 |
C.+259.7 kJ·mol-1 | D.+519.4kJ·mol-1 |
已知:2Zn(s)+O2(g)=2ZnO(s) △H=-701.0kJ·mol-1
2Hg(l)+O2(g)=2HgO(s) △H=-181.6kJ·mol-1
则反应Zn(s)+ HgO(s)=ZnO(s)+ Hg(l)的△H为( )
A.-259.7 kJ·mol-1 | B.-519.4kJ·mol-1 |
C.+259.7 kJ·mol-1 | D.+519.4kJ·mol-1 |
试题篮
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