Riya prepares a salt solution by dissolving 20 grams of common salt in 180 grams of water. She wants to express the concentration of this solution.
i. What is the mass of the solute in this solution?
ii. What is the mass of the solvent in this solution?
iii. What is the total mass of the solution?
iv. Calculate the concentration of the solution in terms of mass by mass percentage. (Formula: (Mass of solute / Mass of solution) × 100)
i. The mass of the solute (common salt) is 20 grams.
ii. The mass of the solvent (water) is 180 grams.
iii. The total mass of the solution is Mass of solute + Mass of solvent = 20 g + 180 g =200 g.
iv. Concentration (mass by mass percentage) = (20 g / 200 g) × 100 = (1/10) × 100 = 10%.