Determine the solubilities of silver chromate, barium chromate, ferric, hydroxide, lead, chloride and mercurous iodide at 298 K. Given K_(sp) values : Ag_(2)CrO_(4)=1.1xx10^(-12), BaCrO_(4)=1.2xx10^(-10), Fe(OH)_(3)=1.0xx10^(-38), PbCl_(2)=1.6xx10^(-5), Hg_(2)I_(2)=4.5xx10^(-29) Determine also the molarities of individual ions.

Determine the solubilities of silver chromate, barium chromate, ferric

1.	Determine the solubilities of silver chromate, barium chromate, ferric, hydroxide, lead, chloride and mercurous iodide at 298 K. Given K_(sp) values : Ag_(2)CrO_(4)=1.1xx10^(-12), BaCrO_(4)=1.2xx10^(-10), Fe(OH)_(3)=1.0xx10^(-38), PbCl_(2)=1.6xx10^(-5), Hg_(2)I_(2)=4.5xx10^(-29) Determine also the molarities of individual ions.
Answer» Solution :`{:(Ag_(2)CrO_(4)HARR 2"Ag"^(+)+CrO_(4)^(2-),K_(sp)=(2s)^(2)(s)=4s^(3)"," :. s^(3)=K_(sp)//4,,),(s""2s"" s""=(1.1xx10^(-12))//4=0.275xx106(-12)=2.75xx10^(-13),,):}` `:. 3 log s = log (2.75xx 10^(-13))=-13+0.4393=-12.5607` or` log s = - 4.1869 = bar(5).8131` `:. s= 6.5xx10^(-5) ` mol `L^(-1)` `[Ag^(+)]=2xx6.5xx10(-5)=13.0xx10^(-5)M = 1.30 xx 10^(-4)M` `[CrO_(4)^(2-)] = 6.5xx10^(-5)M` For other salts, PROCEED exactly in similar manner .