The solubility products of three sparingly soluble salts A B, A₂ B and A B₃ are respectively 4.0 10⁻²⁰, 3.2 10⁻¹¹ and 2.7 10⁻³¹ . The increasing order of their solubility is

Step-by-step solution

The solubility product is defined as the product of concentrations of the ions raised to a power equal to the number of times the ions occur in the equation representing the dissociation of electrolyte at given temperature. (When the solution is saturated.) (i) Electrolyte of the type =A B A B A⁺+B⁻ If, s= solubility. K_s= [A⁺ ] [B⁻ ]=4 0 10⁻²⁰=s^2 (ii) aligned & A₂ B 2 A²⁺+B²⁻ & K_s= [A⁺ ]^2 [B²⁻ ]=3 2 10⁻¹¹=4 s^3 aligned (iii) aligned A B₃ A³⁺ & +3 B⁻ K_s & = [A³⁺ [B²⁻ ]^3=2 7 10⁻³¹=27 s^4 . aligned The order of