A solution is made by dissolving 25 g of sugar in 100 g of water. What is the concentration of the solution in terms of mass by mass percentage?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 20%
Mass by mass percentage \(=\frac{\text{mass of solute}}{\text{mass of solution}}\times100\), and the mass of the solution is the solute plus the solvent.
Mass of solution \(=25+100=125\) g
Mass by mass percentage \(=\frac{25}{125}\times100=20\%\)