What is the mass of solute in 500 mL of a 2% mass-by-volume solution?
Advertisement
Answer and explanation
Correct answer: 10 g
A 2% mass-by-volume solution contains 2 g of solute in every 100 mL of solution. The given volume is 500 mL, which is five times 100 mL. Therefore, solute mass = 2 × 5 = 10 g. This is not a mass-percent calculation, because the denominator is solution volume, not solution mass.
Frequently asked questions
What is the correct answer to this question?
10 g
Why is this the correct answer?
A 2% mass-by-volume solution contains 2 g of solute in every 100 mL of solution. The given volume is 500 mL, which is five times 100 mL. Therefore, solute mass = 2 × 5 = 10 g. This is not a mass-percent calculation, because the denominator is solution volume, not solution mass.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
Advertisement