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 |