已知: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 |
已知: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 |
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