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2Ag(s)+Cd2+(aq)==2Ag+( aq) +Cd(s) Cd(s)+Co2+(aq)==Cd2+( aq) +Co(s) 2Ag+(aq)+Cd(s)==2Ag(s ) +Cd2+(aq) 2Ag+(aq)+Co(s)==2Ag(s ) +Co2+(aq)
增加0.0592V 减少0.0592V 增加0.118V 减少0.118V
2Ag(s)+Cd2+(aq)===2Ag+(aq)+Cd(s) Co2+(aq)+Cd(s)===Co(s)+Cd2+(aq) 2Ag+(aq)+Cd(s)===2Ag(s)+Cd2+(aq) 2Ag+(aq)+Co(s)===2Ag(s)+Co2+(aq)
2Al(s)十2NaOH(aq)+2H2O(1)=2NaAlO2(ag)+3H2(g);△H <0 Ba(OH)2·8H2O(s)+2NH4Cl(s)=BaCl2(aq)+2NH3·H2O(aq)+8H2O(1);△H >0 CaC2(s)+2H2O(1)→Ca(OH)2(s)+C2H2(g);△H <0 FeCl3(aq)十3H2O(1) Fe(OH)3(s)+3HCl(aq);△H >0
2C O (g)+ O2(g)==2CO2(g) HNO3(aq)+NaOH(aq)==NaNO3(aq)+H2O(l) 2H2(g)+O2(g)==2H2O(l) Zn(s)+ Ag2 O(s)== Zn O(s)+2Ag(s)
Ag+(aq)+Br-(aq)AgBr(s) 2Ag (s) + Br2 (g) 2AgBr (s) Ag (s) +Br2 (l)AgBr (s) Ag (aq) +Br2 (g)AgBr (s)
2Ag(s)+Cd2+(aq)=2Ag+(aq)+Cd(s) Co2+(aq)+Cd(s)=Co(s)+Cd2+(aq) 2Ag+(aq)+Cd(s)=2Ag(s)+Cd2+(aq) 2Ag+(aq)+Co(s)=2Ag(s)+Co2+(aq)
2Al(s)十2NaOH(aq)+2H2O(1)=2NaAlO2(ag)+3H2(g);△H <0 Ba(OH)2·8H2O(s)+2NH4Cl(s)=BaCl2(aq)+2NH3·H2O(aq)+8H2O(1);△H >0 CaC2(s)+2H2O(1)→Ca(OH)2(s)+C2H2(g);△H <0 FeCl3(aq)十3H2O(1) Fe(OH)3(s)+3HCl(aq);△H >0
2Al(s)十2NaOH(aq)+2H2O(1)=2NaAlO2(ag)+3H2(g) Ba(OH)2・8H2O(s)+2NH4Cl(s)=BaCl2(aq)+2NH3・H2O(aq)+8H2O(1) CaC2(s)+2H2O(1)→Ca(OH)2(s)+C2H2(g) FeCl3(aq)十3H2O(1) Fe(OH)3(s)+3HCl(aq)
增加0.059v 降低0.059v 降低0.118v 增加0.118v
2Ag(s)+Cl2(g)═2AgCl(s) Ag(g)+Cl2(g)═AgCl(s) Ag(s)+Cl2(g)═AgCl(s) Ag+(aq)+Cl-(aq)═AgCl(s)
2Ag(s)+Cd2+(aq)=2Ag+(aq)+Cd(s) Co2+(aq)+Cd(s)=Co(s)+Cd2+(aq) 2Ag+(aq)+Cd(s)=2Ag(s)+Cd2+(aq) 2Ag+(aq)+Co(s)=2Ag(s)+Co2+(aq)
2Ag(s)+Cd2+(aq)=2Ag+(aq)+Cd(s) Co2+(aq)+Cd(s)=Co(s)+Cd2+(aq) 2Ag+(aq)+Cd(s)=2Ag(s)+Cd2+(aq) 2Ag+(aq)+Co(s)=2Ag(s)+Co2+(aq)
2Ag(s)+Cd2+(aq)===2Ag+(aq)+Cd(s) Co2+(aq)+Cd(s)===Co(s)+Cd2+(aq) 2Ag+(aq)+Cd(s)===2Ag(s)+Cd2+(aq) 2Ag+(aq)+Co(s)===2Ag(s)+Co2+(aq)
2Ag(s)+Cd2+(aq)=2Ag+(aq)+Cd(s) Co2+(aq)+Cd(s)=Co(s)+Cd2+(aq) 2Ag+(aq)+Cd(s)=2Ag(s)+Cd2+(aq) 2Ag+(aq)+Co(s)=2Ag(s)+Co2+(aq)
加入NaCl可以使溶液由a点变到b点 b点和d点均无AgCl沉淀生成 a点对应的Ksp大于c点对应的Ksp 向0.1mol/L的硝酸银溶液中滴加0.1mol/L的NaCl溶液至不再有白色沉淀生成,再向其中滴加0.1mol/L的Na2S溶液,白色沉淀转化为黑色沉淀。其沉淀转化的反应方程式为:2AgCl(s)+S2-(aq)Ag2S(s)+2Cl-(aq) 。