Question

To make a saturated solution, 36 g of sodium chloride is dissolved in 100 g of water at 293 K. Find its concentration at this temperature.

NCERT Class 9th Science Ch 2 Is Matter Around Us Pure

Answer 1

mass of solute(sodium chloride) = 36g
mass of solvent (water) = 100g
mass of solution = mass of solute+mass of solvent
100g+36g=136g
concentration=$\frac{mass of solute}{mass of solvent}*100 \frac{36g}{100g}*100 = 26.47%$

Answer 2

Answer:

$Mass of sodium \: chloride (solution) = 36 g \: Mass \: of \: water (solvent) = 100 g \: Total \: mass of solution = 100 + 36 = 136 g \: Mass \: percentage \: of solution= mass \: of \: solute \: / \: mass \: of solution X 100 =36/136x100 = 26.47%Massofsodiumchloride(solution)=36gMassofwater(solvent)=100gTotalmassofsolution=100+36=136gMasspercentageofsolution=massofsolute/massofsolutionX100=36/136x100=26.47$