1.

(a) A solution contains 20 g of common salt in 160 g of water. Calculate the concentration in terms of mass percentage of the solution. (b) Write dispersion medium and dispersed phase of fog (aerosol).

Answer»

Solution :MASS of common salt (solute) = 20 G
Mass of water (solvent) = 160 g
Mass of solution = Mass of solute + Mass of solvent
= (20 + 160)g
= 180 g
CONCENTRATION = `("Mass of solute")/("Mass of solution")xx100`
= `20/180xx100`
`~~11.1%`
(b) In FOG, the dispersion medium is gas and the dispersed phase is LIQUID.


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