已知下列热化学方程式:Zn(s)+O2(g)=ZnO(s) △H =-351.1kJ·mol-1 ,Hg(l)+O2(g)=HgO(s) △H =-90.7 kJ·mol-1 由此可知反应Zn(s)+HgO(s)=ZnO(s)+Hg(l)的焓变为( )
A.-260.4 kJ·mol-1 |
B.-441.8 kJ·mol-1 |
C.260.4 kJ·mol-1 |
D.441.8 kJ·mol-1 |
已知下列热化学方程式:Zn(s)+O2(g)=ZnO(s) △H =-351.1kJ·mol-1 ,Hg(l)+O2(g)=HgO(s) △H =-90.7 kJ·mol-1 由此可知反应Zn(s)+HgO(s)=ZnO(s)+Hg(l)的焓变为( )
A.-260.4 kJ·mol-1 |
B.-441.8 kJ·mol-1 |
C.260.4 kJ·mol-1 |
D.441.8 kJ·mol-1 |