Question

On evaporation of 2.72 g of saturated solution of a substance, we obtained 0.72 g precipitate. the solubility of substance would be???

Answer 1

Hello Dear.

Good Question and your answer is here.

Given---

 Mass of Solution = 2.72 grams
 
Mass of Solute (Precipitates) = 0.72 grams.

Mass of Solvent = Mass of Solution - Mass of Solute
                               = 2.72 - 0.72
                               = 2 grams.

Using the Formula,

  
 Solubility% = (Mass of Solute/Mass of Solvent) × 100%
                    = (0.72/2) × 100%
                    = 0.36 × 100%
                    = 36 %


Thus, the Solubility of the Substance would be 36%.


I anticipate it will help u.

Have a Marvelous Day.

Answer 2

Solubility :- an amount of solute that can dissolve in given amount of solvent.
In simple way, solubility = $\bold{\frac{\text{mass of solute}}{\text{mass of solvent}}\times100}$

Here , mass of solute ( precipitates) = 0.72 g
mass of solvent = mass of solution - mass of solute = 2.72 - 0.72 =2 g
now, solubility = 0.72/2 × 100 = 72/2 = 36

Hence solubility of substance is 36.