Mass-volume percent

Definition

Mass-volume percent is a way to express the concentration of a solution. It is defined as the mass of solute (in grams) divided by the volume of solution (in milliliters), multiplied by 100.

5 Must Know Facts For Your Next Test

1. Mass-volume percent is often abbreviated as % m/v.
2. It is commonly used in medical and laboratory settings to describe concentrations of solutions.
3. The formula for mass-volume percent is: $\% m/v = \left( \frac{\text{mass of solute (g)}}{\text{volume of solution (mL)}} \right) \times 100$.
4. Unlike molarity, mass-volume percent does not depend on temperature because it uses mass and volume directly.
5. A 10% m/v NaCl solution means there are 10 grams of NaCl in every 100 mL of solution.

Review Questions

• What does a 5% m/v glucose solution indicate about the concentration?
• How do you calculate the % m/v if you have a solution containing 20 grams of solute in 200 mL of solution?
• What are common uses for expressing concentrations using mass-volume percent?

Related terms

Molarity: A measure of concentration expressed as the number of moles of solute per liter of solution ($mol/L$).

Mass Percent: A measure of concentration expressed as the mass of solute divided by the total mass of the solution, multiplied by 100.

Volume Percent: A measure of concentration expressed as the volume of solute divided by the total volume of the solution, multiplied by 100.