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2Zn(s)+2Ag2O(s)===2ZnO(s)+4Ag(s)ΔH=-634.6 kJ·mol-1 Zn+Ag2O===ZnO+2Ag ΔH=+317.3kJ·mol-1 Zn(s)+Ag2O(s)===ZnO(s)+2Ag(s)ΔH=-317.3kJ Zn(s)+Ag2O(s)===ZnO(s)+2Ag(s)ΔH=+317.3kJ·mol-1
Zn(s)+Ag2O(s)=ZnO(s)+2Ag(s) ΔH.=+317.3kJ·mol-1 Zn+Ag2O=ZnO+2Ag ΔH.=+317.3kJ·mol-1 Zn(s)+Ag2O(s)=ZnO(s)+2Ag(s) ΔH.=-317.3kJ 2Zn(s)+2Ag2O(s)=2ZnO(s)+4Ag(s) ΔH.=-634.6 kJ·mol-1
+259.7kJ·mol-1 -259.7kJ·mol-1 +519.4kJ·mol-1 -519.4kJ·mol-1
+519.4kJ·mol-1 +259.7 kJ·mol-1 -259.7 kJ·mol-1 -519.4kJ·mol-1
+519.4kJ·mol-1 -519.4kJ·mol-1 +259.7 kJ·mol-1 -259.7 kJ·mol-1
+519.4kJ·mol-1 +259.7 kJ·mol-1 -259.7 kJ·mol-1 -519.4kJ·mol-1
+519.4 kJ/mol +259.7 kJ/mol -259.7 kJ/mol -519.4 kJ/mol
—441.8 kJ/mol —254.6 kJ/mol —438.9 kJ/mol —260.4 kJ/mol
+519.4kJ·mol-1 +259.7 kJ·mol-1
-259.7 kJ·mol-1 -519.4kJ·mol-1
+519.4 KJ·mol-1 +259.7 KJ·mol-1 -519.4 KJ·mol-1 -259.7 KJ·mol-1
-317.3 kJ/mol -379.3 kJ/mol -332.8 kJ/mol 317.3 kJ/mol
Zn(s)十Ag2O(s)====ZnO(s)+2Ag(s),△H=317.3kJ/mol Zn+Ag2O=====ZnO+2Ag,△H=317.3kJ/mol Zn(s)+Ag2O(s)=====ZnO(s)+2Ag(s),△H=-317.3kJ/mol 2Zn(s)+2Ag2O(s)=====2ZnO(s)+4Ag(s),△H=-317.3kJ
442.3kJ•mol-1 260.7kJ•mol-1 –442.3kJ•mol-1 -260.7kJ•mol-1
+519.4 kJ·mol-1 +259.7 kJ·mol-1 -259.7 kJ·mol-1 -519.4 kJ·mol-1
v (W)=3 v (Z) 2 v (X)=3 v (Z) 2 v (X)= v (Y) 3 v (W)=2 v (X) 已知:2Zn(s) + O2(g) = 2ZnO(s) △H=-701.0kJ·mol-1 2Hg(l) + O2(g) = 2HgO(s) △H=-181.6kJ·mol-1 则反应Zn(s) + HgO(s) = ZnO(s) + Hg(l)的△H为 A. + 519.4kJ·mol-1 B. + 259.7 kJ·mol-1 C. -259.7 kJ·mol-1 D. -519.4kJ·mol-1
-317.3kJ/mol -379.3kJ/mol -332.8 kJ/mol +317.3 kJ/mol
-441.8kJ/mol -254.6kJ/mol -438.9kJ/mol -260.4kJ/mol
Zn(s)+Ag2O(s)===ZnO(s)+2Ag(s)ΔH.=+317.3kJ·mol-1 Zn+Ag2O===ZnO+2Ag ΔH.=+317.3kJ·mol-1 Zn(s)+Ag2O(s)===ZnO(s)+2Ag(s)ΔH.=-317.3kJ 2Zn(s)+2Ag2O(s)===2ZnO(s)+4Ag(s)ΔH.=-634.6 kJ·mol-1
+519.4 kJ·mol-1 +259.7 kJ·mol-1 -259.7 kJ·mol-1 -519.4 kJ·mol-1
+519.4kJ·mol-1 -259.7 kJ·mol-1 +259.7 kJ·mol-1 -519.4kJ·mol-1