Question

A solution is made by dissolving 50g of glucose in 250g of water. Calculate the concentration of the solution in
mass percentage.

Answer 1

GIVEN: mass of glucose = 50 gm

              mass of water = 250 gm

TO FIND: concentration in terms of mass percentage

SOLUTION:

mass percentage is one of the concentration to express the concentration of solute in a solution. Other such terms to express concentration are molarity, molality , mole fraction and normality.

mass percentage = $\frac{mass of solute}{mass of solution}$ X 100

mass of solute = 50 gm

mass of solution = mass of water + mass of glucose

                            = 50 + 250 gm

                            = 300 gm

mass percentage = $\frac{50}{300}$ x 100

mass percentage = $\frac{100}{6}$

mass percentage = 16.6666

Hence the mass percentage is 16.666%.