Question

1M

A Salt solution contains 40 g of common Salt in 360 g of water at 298K. Calculate the concentration in terms of mass by mass percentage of the solution at that temperature.​

Answer 1

Given :-

Mass of common Salt( solute ) = 40g

Mass of water ( solvent) = 360g

Temperature given = 298k

Solution :-

Mass of common Salt (solute) = 40g

Mass of water (solvent) = 360g

Mass of solution = mass of water + Mass of solute

Mass of solution = 360 + 40

= 400g

Now,

Concentration of solution = mass of solute /mass of solution * 100

Concentration of solution = 40/ 400 * 100

= 10%

Hence, the concentration of solution at 293k is 10%