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