已知:Zn(s)+(1/2)O2(g)= ZnO(s) ΔrHmΘ=351.5kJ/mol Hg(s)+(1/2)O2(g)= HgO(s) ΔrHmΘ=90.8kJ/mol,则 Zn(s)+ HgO(s) = ZnO(s)+ Hg(s)的ΔrHmΘ是: ( )
选项:
A:442.2 kJ/mol
B:260.7kJ/mol
C:-62.3kJ/mol
D:-442.2kJ/mol
发布时间:2024-06-15 21:13:06