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%
Verified Correct Answer: C.
Step-by-Step Mathematical Solution
Mass of Solution = Mass of Solute + Mass of Solvent → 20g + 180g
: Mass of Solution = 200g
Mass Percent = \(\frac{Mass of Solute}{Mass of Solution} * 100%\)
Mass percent = \(\frac{20}{200} * 100%\)
Mass percent = 10%
Source: WAEC / JAMB / NECO Classroom Archive (Record #60511)