Question

What is the concentration of 100 lbs. of solution occupying 25 m^3 of volume?

(a) 1.8 Kg/m^3

(b) 2.7 Kg/m^3

(c) 4 Kg/m^3

(d) 8 Kg/m^3

This question was addressed to me in quiz.

My question is taken from Concentration topic in portion Moles, Density & Concentration of Basic Chemical Engineering

Answer 1

The correct answer is (a) 1.8 Kg/m^3

For explanation I would say: Mass of solution = 100*0.453 = 45.3 kg, => Concentration of solution = 45.3/25 = 1.8 kg/m^3.