1. What is W/V% Concentration?

W/V% (weight/volume percentage) is a common way to express the concentration of a solution. It represents the mass of solute (in grams) dissolved in 100 mL of solution.

2. How Does the Calculator Work?

The calculator uses the w/v% formula:

Where:

• \( mass_{solute} \) — Mass of solute in grams (g)
• \( V_{solution} \) — Volume of solution in milliliters (mL)

Explanation: The formula calculates what percentage of the solution's volume is made up by the solute's mass.

3. Importance of W/V% Calculation

Details: W/V% is widely used in medicine, pharmacy, and chemistry to prepare solutions with precise concentrations, especially when dealing with solid solutes in liquid solutions.

4. Using the Calculator

Tips: Enter the mass of solute in grams and volume of solution in milliliters. Both values must be positive numbers, and volume cannot be zero.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between w/v% and w/w%?
A: W/V% is weight per volume (mass solute per solution volume), while W/W% is weight per weight (mass solute per total mass of solution).

Q2: When should I use w/v% concentration?
A: Use w/v% when preparing solutions where the solute is a solid and the solvent is a liquid (e.g., saline solutions, drug preparations).

Q3: What are common w/v% concentrations in medicine?
A: Examples include 0.9% saline (0.9 g NaCl per 100 mL), 5% dextrose (5 g glucose per 100 mL), and 10% calcium gluconate.

Q4: Does temperature affect w/v% concentration?
A: Unlike molarity, w/v% is not significantly affected by temperature changes since mass and volume measurements are temperature-independent.

Q5: How do I convert w/v% to molarity?
A: You need the solute's molecular weight: Molarity = (w/v% × 10) / molecular weight (in g/mol).