Answer to Question #308881 in Chemistry for Junard

Question

A solution is prepared by dissolving 20 mL of pure hydrogen peroxide (H₂O2) in enough water to make 200mL of solution. What is the concentration of the H₂O2 solution?

Answer 1

Solution:

Volume of hydrogen peroxide (H₂O₂) = 20 mL – solute

Volume of solution = 200 mL

Volume/volume percent concentration = (Volume of solute / Volume of solution) × 100%

Therefore,

Volume/volume percent concentration = (20 mL / 200 mL) × 100% = 10% H₂O₂

Answer: The volume/volume percent concentration of the H₂O₂ solution is 10%