Volume percentage is defined as:

Volume percentage is defined as:

• A. (volume solute / volume solution) x 100
• B. (volume solute / volume solvent) x 100
• C. (volume solute / mass solution) x 100
• D. (volume solution / volume solute) x 100

Answer: (A)

Volume percentage expresses what portion of the total solution’s volume is taken up by the solute. It is defined as the volume of solute divided by the volume of the entire solution, multiplied by 100. This reflects how much of the solution’s space is occupied by the solute. So the expression is (volume of solute ÷ volume of solution) × 100. For example, if 25 mL of solute is present in a 100 mL solution, the volume percent is (25/100) × 100 = 25%. The other forms don’t match this idea. Using the volume of solute relative to the solvent would not describe how much of the whole solution is solute. Dividing volume by mass mixes two different types of quantities, which isn’t a valid percent of volume. Inverting the ratio would describe a different, not-standard quantity.

Volume percentage expresses what portion of the total solution’s volume is taken up by the solute. It is defined as the volume of solute divided by the volume of the entire solution, multiplied by 100. This reflects how much of the solution’s space is occupied by the solute.

So the expression is (volume of solute ÷ volume of solution) × 100. For example, if 25 mL of solute is present in a 100 mL solution, the volume percent is (25/100) × 100 = 25%.

The other forms don’t match this idea. Using the volume of solute relative to the solvent would not describe how much of the whole solution is solute. Dividing volume by mass mixes two different types of quantities, which isn’t a valid percent of volume. Inverting the ratio would describe a different, not-standard quantity.