One dm^(3) solution containing 10^(-5) moles each of Cl^(-) ions and CrO_(4)^(2-) ions is treated with 10^(-4) moles of silver nitrate. Which one of the following observation is made. [K_(sp) Ag_(2)CrO_(4) = 4 xx 10^(-12)] [K_(sp)AgCl = 1 xx 10^(-10)]

One dm^(3) solution containing 10^(-5) moles each of Cl^(-) ions and C

1.	One dm^(3) solution containing 10^(-5) moles each of Cl^(-) ions and CrO_(4)^(2-) ions is treated with 10^(-4) moles of silver nitrate. Which one of the following observation is made. [K_(sp) Ag_(2)CrO_(4) = 4 xx 10^(-12)] [K_(sp)AgCl = 1 xx 10^(-10)]
Answer» Precipitation does not occur SILVER chromate gets PRECIPITATED first Silver CHLORIDE gets precipitated first Both silver chromate and silver chloride start precipitation simultaneously Solution :Ionic product of `AgCl = [10^(-4)][10^(-5)] = 10^(-9)` Ionic product of `Ag_(2)CrO_(4) = [10^(-8)][10^(-5)] = 10^(-13)` Ionic product of `AgCl gt K_(sp)` of AgCl So, precipitation will take place. Ionic product of `Ag_(2)CrO_(4) LT K_(sp)` of `Ag_(2)CrO_(4)` So, precipitation will not take place.