第1个回答 2016-12-09
K稳[Ag(S2O3)23-]=2.8×10^13;
KSP[AgBr]= 5.0 ×10^-13
AgBr + 2S2O32- =[Ag(S2O3)2]3- + Br-
K=Ksp * K稳=14,设能溶解xmolL-
AgBr + 2S2O32- =[Ag(S2O3)2]3- + Br-
...........0.24-2x ...............x................ x
K=x^2 /(0.24-2x)^2 =14
x=0.106mol/L
1升溶解0.106molAgBr,质量19.95克