1. What is Molar Concentration?

Molar concentration (also called molarity) is a measure of the concentration of a chemical species in a solution, expressed as the amount of substance per unit volume of solution. It is commonly used in chemistry to describe the concentration of solutions.

2. How Does the Calculator Work?

The calculator uses the molar concentration formula:

Where:

• \( c \) — Molar concentration (mol/dm³)
• \( n \) — Amount of substance (mol)
• \( V \) — Volume of solution (dm³)

Explanation: This formula calculates the concentration by dividing the number of moles of solute by the volume of the solution in cubic decimeters.

3. Importance of Concentration Calculation

Details: Accurate concentration calculation is essential for preparing chemical solutions, conducting experiments, quality control in manufacturing, and pharmaceutical preparations.

4. Using the Calculator

Tips: Enter the amount of substance in moles and the volume in cubic decimeters. Both values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What is the difference between molarity and molality?
A: Molarity (c) is moles per liter of solution, while molality is moles per kilogram of solvent. Molarity is temperature-dependent, while molality is not.

Q2: How do I convert between different concentration units?
A: To convert to g/dm³, multiply molar concentration by the molar mass. For percentage concentration, additional calculations are needed based on mass or volume.

Q3: Why use dm³ instead of liters?
A: 1 dm³ is exactly equal to 1 liter, but dm³ is the SI unit for volume, making it preferred in scientific calculations.

Q4: What are typical concentration ranges?
A: Concentrations can range from very dilute (10⁻⁶ mol/dm³) to concentrated (10+ mol/dm³) depending on the application and solubility.

Q5: How does temperature affect concentration?
A: Molar concentration changes with temperature due to thermal expansion of the solution. For precise work, specify the temperature or use molality.