Question

Mass by volume percentage = __________________.
1. (Volume of solute/volume of solution) x 100
2. (mass of solute/mass of solution) x 100
3. (mass of solute/volume of solution) x 100
4. (mass of solution/volume of solute) x 100

Answer 1

Correct Answer - Option 3 : (mass of solute/volume of solution) x 100

Mass by volume percentage = (mass of solute/volume of solution) x 100.

• It measures solute mass or weight in grams (e.g., in grams) vs. solution volume (e.g., in mL).
• An example would be a 0.9 per cent (w/v) NaCl solution containing 0.9 g of NaCl per 100 mL of solution in medical saline solutions.
• The mass/volume percentage is used to express a solution's concentration when the solute mass and solution volume are given.
• The mass percentage is used when the mass of a solute and the mass of a solution express the concentration of a solution.
• Mass by mass percentage = (mass of solute/mass of solution) x 100