已知Mg(s)→Mg(g) ΔH1=147kJ·mol-1 Mg(g)→Mg2+(g)+2e- ΔH2-2188kJ·mol-1 S(s)→S(g) △H3=277kJ·mol-1 S
已知Mg(s)→Mg(g) ΔH1=147kJ·mol-1
Mg(g)→Mg2+(g)+2e-ΔH2-2188kJ·mol-1
S(s)→S(g) △H3=277kJ·mol-1
S(g)+2e-→S2-(g) △H4=332kJ·mol-1
Mg(s)+S(s)→MgS(s) ΔH5=-347kJ·mol-1
计算MgS的晶格能U。