MHT CET202313 May 2023Morning ShiftChemistryIonic EquilibriumActual
The solubility product of Mg ( OH )₂ is 1.8 10⁻¹¹ at 298 ~K . What is its solubility in mol dm ⁻³ ?
Options
- A1.650 10⁻⁴
- B2.120 10⁻⁴
- C3.184 10⁻⁴
- D4.550 10⁻⁴
Correct answer
A. 1.650 10⁻⁴
Step-by-step solution
array ll & Mg ( OH )_ 2( ~s ) Mg _ (aq) ²⁺+2 OH _ ( aq ) ⁻ & Here, x=1, y =2 & K _ sp =x^x y ^ y S ^ x+ y =(1)^1(2)^2 ~S ¹⁺²=4 ~S ^3 & S = [3] K _ sp 4 = [3] 1.8 10⁻¹¹ 4 & = [3] 4.5 10⁻¹² =1.650 10⁻⁴ array