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 number of moles of solute per liter of solution. It is denoted by the symbol M (mol/L).

2. How Does the Calculator Work?

The calculator uses the molar concentration formula:

Where:

• \( M \) — Molar concentration (mol/L)
• \( n \) — Number of moles of solute (mol)
• \( V \) — Volume of solution (L)

Explanation: This formula calculates the concentration by dividing the amount of substance (in moles) by the volume of the solution (in liters).

3. Importance of Molar Concentration

Details: Molar concentration is a fundamental concept in chemistry used in preparing solutions, stoichiometric calculations, and understanding reaction kinetics. It's essential for quantitative analysis in laboratories and industrial processes.

4. Using the Calculator

Tips: Enter the number of moles and volume in liters. Both values must be positive numbers. The calculator will compute the molar concentration in mol/L.

5. Frequently Asked Questions (FAQ)

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

Q2: How do I convert grams to moles?
A: Use the formula: moles = mass (g) / molar mass (g/mol). You need to know the molar mass of the substance.

Q3: Can I use different volume units?
A: The calculator requires liters. Convert milliliters to liters by dividing by 1000 (1 mL = 0.001 L).

Q4: What is a standard solution?
A: A standard solution is one whose concentration is accurately known. It's often prepared using a volumetric flask for precise volume measurements.

Q5: How does dilution affect molarity?
A: When you dilute a solution, the number of moles stays constant but the volume increases, so the molarity decreases according to the formula M₁V₁ = M₂V₂.