Question

3.To make a satured solution 36g of sodium chloride is dissolved in 100g of water so 293k.Find its concentration at this temperature.



And please explain it properly because in this lockdown our school will take online exam ​

Answer 1

GIVEN :

• mass of solute=36 g
• mass of solvent=100g

TO FIND:

• concentration

SOLUTION:

$conc \: = \frac{mass \: of \: solute}{mass \: of \: solvent}$

$conc = \frac{36}{100}$

$conc = 0.36$

$\%conc = 36\%$

Answer 2

We have,

a saturated solution which has

Mass of solute (here, sodium chloride)= 36 grams

Mass of solvent (here, water)= 100 grams

Temperature= 293 K or 20° C

Mass of solution = Mass of solute + Mass of solvent

⇒Mass of solution= 36 grams + 100 grams

⇒Mass of solution= 136 grams

To find the concentration of the solution, we have the formula$Concentration=\frac{Mass of solute}{Mass of solution} * 100$

⇒$Concentration=\frac{36}{136} *100$

⇒$Concentration= 26.4705$%

or Concentration=26.48% approx.

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