AgBr+2NH3=Ag(NH3)2++Br-..........1-2x........x.............xK=k稳*KspAg(NH3)2+的K稳=1.12x10^7AgBr的Ksp=5x10^-13K=5.6x10^-6x*x/(1-2x)^2=5.6x10^-6x=2.4x10^-3molL-溶解2.4x10^-3*0.1*188=0.045克
