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已知:2Zn(s)+O2(g)===2ZnO(s)ΔH1=-701.0kJ·mol-12Hg(l)+O2(g)===2HgO(s)ΔH2=-181.6kJ·mol-1则反应Zn(s)+HgO(s)===ZnO(s)+Hg(l)的ΔH为A.+519.4kJ·mol-1B.+259.7kJ·mol-1C.-259.7kJ·mol-1

题目详情

已知:2Zn(s)+O2(g)===2ZnO(s) ΔH1=-701.0 kJ·mol-1

2Hg(l)+O2(g)===2HgO(s) ΔH2=-181.6 kJ·mol-1

则反应Zn(s)+HgO(s)===ZnO(s)+Hg(l)的ΔH为

A.+519.4 kJ·mol-1      B.+259.7 kJ·mol-1

C.-259.7 kJ·mol-1      D.-519.4 kJ·mol-1

 

已知:2Zn(s)+O2(g)===2ZnO(s) ΔH1=-701.0 kJ·mol-1

2Hg(l)+O2(g)===2HgO(s) ΔH2=-181.6 kJ·mol-1

则反应Zn(s)+HgO(s)===ZnO(s)+Hg(l)的ΔH为

A.+519.4 kJ·mol-1      B.+259.7 kJ·mol-1

C.-259.7 kJ·mol-1      D.-519.4 kJ·mol-1

 

已知:2Zn(s)+O2(g)===2ZnO(s) ΔH1=-701.0 kJ·mol-1

2Hg(l)+O2(g)===2HgO(s) ΔH2=-181.6 kJ·mol-1

则反应Zn(s)+HgO(s)===ZnO(s)+Hg(l)的ΔH为

A.+519.4 kJ·mol-1      B.+259.7 kJ·mol-1

C.-259.7 kJ·mol-1      D.-519.4 kJ·mol-1

 

已知:2Zn(s)+O2(g)===2ZnO(s) ΔH1=-701.0 kJ·mol-1

21-1

2Hg(l)+O2(g)===2HgO(s) ΔH2=-181.6 kJ·mol-1

22-1

则反应Zn(s)+HgO(s)===ZnO(s)+Hg(l)的ΔH为

A.+519.4 kJ·mol-1      B.+259.7 kJ·mol-1

-1-1

C.-259.7 kJ·mol-1      D.-519.4 kJ·mol-1

-1-1

 

▼优质解答
答案和解析

C

C

C

C