Question

To make a saturated solution, 36 grams of sodium chloride is dissolved in

100gram of water at 293 K . Find its concentration at this temperature.​

Answer 1

Given :-

Mass of sodium chloride :- 36g

Mass of water :- 100g

To Find :-

Concentration

Solution :-

We know :-

$\bf Concentration = \dfrac{ Mass \: of \: solute }{Mass \: of \: solution} \times 100$

Here :-

Mass of solute :- 36g

Mass of solvent :- 100g

Mass of solution :- 100g + 36g = 136g

Substitute the values :-

$: \implies \sf Concentration = \dfrac{36}{136} \times 100$

$: \implies \sf Concentration = \dfrac{9}{34} \times 100$

$: \implies \sf Concentration = 0.2647 \times 100$

$: \implies \sf Concentration = 26.47$

Concentration :- 26.47%

Answer 2

Given :-

To make a saturated solution, 36 grams of sodium chloride is dissolved in  

100gram of water at 293 K

To Find :-

Concentration at this temperature.​

Solution :-

Here,

Sodium chloride is the solute and water is solvent

Mass of Solution = Mass of solute + Mass of solvent

Mass of Solution = 36 + 100

Mass of Solution = 136 gm

Now,

Concentration = Mass of solute × 100/Mass of solution

Concentration = 36 × 100/136

Concentration = 3600/136

Concentration = 26.47 % ≈ 26.5 %