25℃是50ml0.18摩尔每升硝酸银溶液中加入50ml0.0092摩尔每升Na2S溶液生成沉淀,

25℃是50ml0.18摩尔每升硝酸银溶液中加入50ml0.0092摩尔每升Na2S溶液生成沉淀,则沉淀体系中银离子浓度是多少(

25℃ Ksp(Ag2S)=6.3×10-50
cS2-=0.0001mol/l
(cAg+)^2*cS2-=Ksp(Ag2S)=6.3×10-50
(cAg+)^2*0.0001=6.3×10-50
(cAg+)^2=6.3×10-46
cAg+=2.5 * 10 -23
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