1. What is Molar Concentration?

Molar concentration (also called molarity) is a measure of the concentration of a chemical species, particularly of a solute in a solution, in terms of amount of substance per unit volume of solution. It is expressed in moles per liter (mol/L).

2. How Does the Calculator Work?

The calculator uses the molar concentration formula:

Where:

• \( M \) — Molar concentration (mol/L)
• \( n \) — Amount of substance (moles)
• \( V \) — Volume of solution (liters)

Explanation: The formula calculates how many moles of solute are present in each liter of solution.

3. Importance of Molar Concentration

Details: Molar concentration is fundamental in chemistry for preparing solutions, stoichiometric calculations, and chemical reactions. It's essential for experiments requiring precise concentrations.

4. Using the Calculator

Tips: Enter the amount of substance in 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 is moles per liter of solution, while molality is moles per kilogram of solvent. Molarity changes with temperature, molality doesn't.

Q2: How do I convert grams to moles?
A: Divide the mass in grams by the molar mass of the substance (g/mol).

Q3: What are typical molar concentration ranges?
A: Concentrations range from millimolar (mM, 10⁻³ M) to molar (M, 1 mol/L) for most laboratory solutions.

Q4: How does dilution affect molarity?
A: Diluting a solution decreases its molarity proportionally to the dilution factor (M₁V₁ = M₂V₂).

Q5: When is molar concentration not appropriate?
A: For very dilute solutions (parts per million/billion) or when temperature significantly affects volume.