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已知: 2Zn(s)+O2(g)=2ZnO(s)△H1=-702.2kJ/mol 2Hg(s)+O2(g)=2Hg O(s)△H2=-181.4kJ/mol Zn(s)+HgO(s)=Hg(s)+Zn...
题目内容:
已知:
2Zn(s)+O2(g)=2ZnO(s)△H1=-702.2kJ/mol
2Hg(s)+O2(g)=2Hg O(s)△H2=-181.4kJ/mol
Zn(s)+HgO(s)=Hg(s)+ZnO(s)△H3
则△H3的值是( )
A.-441.8kJ/mol
B.-254.6kJ/mol
C.-438.9kJ/mol
D.-260.4kJ/mol
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