Question

a solution is prepared by adding 20g of glucose in 100g of water. calculate the concentration in terms of mass by mass percentage of solution​

Answer 1

Answer:

20g + 100g = 120g

Mass of solution = 120g

Mass by mass percentage of solution = mass of solute/mass of solution*100

                                                               = 20g/120*100

                                                               = 1/6*100

                                                               = 1/3*50

                                                                = 50/3

                                                                = 16.67%

Answer 2

SOLUTION:

Mass of Solute (Glucose) = 20g

Mass of Solvent (Water) = 100g

We know,

Mass of Solution = Mass of Solute + Mass of Solvent

                             => 20g + 100g

Mass of Solution = 120g

∴ Concentration% of the Solution = $\frac{Mass\:of\:Solute}{Mass\:of\:Solution}$

$= > \frac{20}{120} \times 100 \\ \\ = > 16.6666\%$

∴ The Concentration of the Solution is 16.6666...% which can be Rounded- off to 16.67% or 16.7%