Home
Back
Mass/Volume Percent Formula:
| From: | To: |
Mass/volume percent (%w/v) is a common way to express the concentration of a solution. It represents the mass of solute (in grams) per 100 mL of solution. This measurement is widely used in chemistry, pharmacy, and biology for preparing solutions of known concentration.
The calculator uses the mass/volume percent formula:
Where:
Explanation: The formula calculates the concentration by dividing the mass of the solute by the volume of the solution and multiplying by 100 to get a percentage value.
Details: Mass/volume percent is crucial for preparing solutions with precise concentrations in laboratory settings, pharmaceutical preparations, and various industrial applications. It ensures accurate dosing and consistent results in experiments and manufacturing processes.
Tips: Enter the mass of solute in grams and the volume of solution in milliliters. Both values must be positive numbers. The calculator will compute the mass/volume percent concentration.
Q1: What's the difference between %w/v and %v/v?
A: %w/v (weight/volume) uses mass of solute, while %v/v (volume/volume) uses volume of solute. %w/v is more precise for solids dissolved in liquids.
Q2: Can I use different units with this calculator?
A: The calculator is designed for grams and milliliters. Convert other units to these before calculation (e.g., mg to g, L to mL).
Q3: How accurate is this calculation?
A: The calculation is mathematically precise. Accuracy depends on the precision of your measurements and the purity of your substances.
Q4: When should I use mass/volume percent instead of molarity?
A: Use %w/v when working with solutions where the molecular weight isn't critical or known. Use molarity when stoichiometric calculations are needed.
Q5: Does temperature affect %w/v calculations?
A: Volume can change with temperature, which may affect concentration. For precise work, measure volumes at the temperature specified in procedures.