Question

A solution contains 40 g of common salt in 320 g of water. Calculate the concentration in terms of mass by the mass percentage of the solution.

Answer 1

Mass of solute (salt) = 40 g

Mass of solvent (water) = 320 g

We know,

Mass of solution = Mass of solute + Mass of solvent

= 40 g + 320 g

= 360 g

Mass percentage of solution = `"Mass of solute"/"Mass of solution" xx 100`

= `40/360 xx 100`

= 11.1%