Volume percentage (v/v)
Defines concentration as volume of solute per 100 units volume of solution.
What is Volume percentage (v/v)?
A concentration term defining the volume of solute per 100 units of volume of the solution.
Key formula / rule: Volume Percentage (v/v)
Key points
- Define volume percentage (v/v) and state its formula.
- Calculate the volume percentage of a solution given the volumes of solute and solution.
- Explain why volume percentage is temperature-dependent.
- Identify real-world applications of volume percentage.
Common exam trap
Assuming that the volume of the solution is always the sum of the volumes of the solute and solvent.
Definitions
- Term
Volume Percentage (v/v)
- Meaning
A concentration term defining the volume of solute per 100 units of volume of the solution.
- Term
Solute
- Meaning
The component present in a smaller amount in a solution, which gets dissolved.
- Term
Solvent
- Meaning
The component present in a larger amount in a solution, which dissolves the solute.
- Term
Solution
- Meaning
A homogeneous mixture of two or more substances.
Learning objectives
Define volume percentage (v/v) and state its formula.
Calculate the volume percentage of a solution given the volumes of solute and solution.
Explain why volume percentage is temperature-dependent.
Identify real-world applications of volume percentage.
Differentiate volume percentage from other concentration terms.
Formulae
- Name
Volume Percentage (v/v)
- Note
The 'Volume of Solution' refers to the total volume of the solution after mixing, which may not be equal to the sum of the individual volumes of solute and solvent due to non-ideal mixing effects.
- Expression
Volume Percentage (v/v) = (Volume of Solute / Volume of Solution) × 100
Prerequisites
Basic understanding of solutions, solutes, and solvents.
Concept of homogeneous mixtures.
Basic arithmetic and percentage calculations.
Common mistakes
Assuming that the volume of the solution is always the sum of the volumes of the solute and solvent.
Forgetting that volume percentage is temperature-dependent.
Confusing volume percentage (v/v) with mass percentage (w/w) or mass/volume percentage (w/v).
Incorrectly identifying the solute and solvent in a given problem.
Keywords
Volume percentage
v/v
Concentration
Solution
Solute
Solvent
Liquid-liquid solution
Temperature dependence
Practice preview
A solution contains 50 mL of acetic acid in 450 mL of water. What is the volume percentage (v/v) of acetic acid in the solution?…
easy
Which of the following statements about volume percentage (v/v) is correct?…
easy
A 15% (v/v) solution of a liquid solute in a solvent means that:…
medium