Question

To make a saturated solution 36 g of sodium chloride is dissolve in 100 g of water at 293 k . find its concentration at this temperature .

Answer 1

Mass of solute (sodium chloride) =36g
Mass of solvent (water) =100g
Mass of solution = Mass of Solute + Mass of solvent
= 36g +100g = 136g
concentration = mass of solute / mass of solvent × 100
so , concentration = 36grm/136grm ×100
=26.47 %

Answer 2

Answer:

The concentration of the saturated solution is $26.47$%

Explanation:

Saturated solution:- A saturated solution is one that reached its maximum concentration of a solute dissolved in the solvent and there is no capacity to dissolve more solute into it

As the question asked for the concentration of solution which means it basically asked for the mass percent

Mass percent reflects that mass of solute is there in a given mass of solution

Mass percent = mass of solute per mass of solution which gets multiplied by 100 to get the percentage.

$mass of solute(NaCl)=36g\\mass of solvent(H_{2}O)=100g\\ total mass of solution=36+100 =136g$

$concentration = [(mass of solute)/(mass of solvent)*100}]\\concentration = [(36/136)*100]$

$concentration=26.47$%

That shows that if the temperature of the solution increases the solubility of the solution increases and if the temperature of the solution decreases the solubility of the solution decreases this reaction shows that it is an endothermic reaction that results in absorbing energy from its surrounding.