已知:Zn(s)+ 1/2 O2(g)= ZnO(s) △H1= ―351.1kJ/mol
Hg(l)+ 1/2 O2(g)= HgO(s) △H2= ―90.7kJ/mol
则反应Zn(s)+HgO(s)= ZnO(s)+Hg(l)的焓变是
A.―441.8 kJ/mol | B.―254.6 kJ/mol |
C.―438.9 kJ/mol | D.―260.4 kJ/mol |
已知:Zn(s)+ 1/2 O2(g)= ZnO(s) △H1= ―351.1kJ/mol
Hg(l)+ 1/2 O2(g)= HgO(s) △H2= ―90.7kJ/mol
则反应Zn(s)+HgO(s)= ZnO(s)+Hg(l)的焓变是
A.―441.8 kJ/mol | B.―254.6 kJ/mol |
C.―438.9 kJ/mol | D.―260.4 kJ/mol |