A solution contains 20g of solute in 180g of solvent. If the solvent is water. What is the concentration of the solution in terms of mass by mass percentage?

A. 11.%
B. 22.2%
C. 10%
D. 20%

Correct Answer:

Option C = 10%

Explanation

Mass of Solution = Mass of Solute + Mass of Solvent → 20g + 180g

: Mass of Solution = 200g

Mass Percent = ^{Mass of Solute} /^{Mass of Solution} X 100

Mass percent = ²⁰/₂₀₀ X 100

Mass percent = 10%