Question

to make a saturated solution 40 g of potassium chloride is dissolved in 100 g water at 293 k . find it's concentration at this temperature​

Answer 1

Answer:

Explanation:

Mass of potassium chloride(solute)=40g

Mass of water(solvent) =100g

Mass of solution =40+100=140g

Concentration =( mass of Solute/mass of solution)×100

=(40/140)×100

=(0.2857142857)×100

= 28.5714285714..

Hope it is helpful

Answer 2

Concentration of solute by mass at given temperature =

                                                               $\frac{Mass\ of\ solute}{Mass\ of\ solution}$×100

Given,

mass of potassium chloride (solute) = 40 g

mass of water (solvent)= 100 g

Then, mass of solution = mass of solute + mass of solvent.

                                      = 40 +100

        mass of solution   =140 g

Therefore, concentration of potassium chloride = $\frac{40}{140}$×$100$

                                                                              = 28.57 %