50 mL alcohol is diluted to make a total solution volume of 250 mL. What is the volume percentage?
Answer and explanation
Correct answer: 20%
Volume percentage is defined as (volume of solute ÷ final volume of solution) × 100. Here the solute volume is 50 mL and the final solution volume is 250 mL. Thus, volume percentage = (50 ÷ 250) × 100 = 20%. Option A is correct. The denominator must be the final solution volume, not the volume of solvent added or the original solute volume alone.
Frequently asked questions
What is the correct answer to this question?
20%
Why is this the correct answer?
Volume percentage is defined as (volume of solute ÷ final volume of solution) × 100. Here the solute volume is 50 mL and the final solution volume is 250 mL. Thus, volume percentage = (50 ÷ 250) × 100 = 20%. Option A is correct. The denominator must be the final solution volume, not the volume of solvent added or the original solute volume alone.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
