1. What is Molarity?

Molarity (M) is a measure of the concentration of a solute in a solution, defined as the number of moles of solute per liter of solution. It's one of the most common units for measuring concentration in chemistry.

2. How Does the Calculator Work?

The calculator uses the molarity formula:

Where:

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

Explanation: The formula calculates how concentrated a solution is by dividing the amount of substance (in moles) by the total volume of the solution.

3. Importance of Molarity

Details: Molarity is crucial in chemical reactions, solution preparation, and stoichiometric calculations. It allows chemists to precisely control reactant concentrations and predict reaction outcomes.

4. Using the Calculator

Tips: Enter the amount of solute in moles and the total volume of solution in liters. Both values must be positive numbers.

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: What are typical molarity values?
A: Concentrations range from very dilute (10^-6 M) to highly concentrated (10+ M), depending on the substance and application.

Q3: How do I prepare a solution of specific molarity?
A: Dissolve the calculated mass of solute in less than the final volume, then dilute to the exact volume needed.

Q4: Can molarity be used for gases?
A: Yes, for gases dissolved in liquids, but not for gases in their pure state (where partial pressure is more common).

Q5: Why is molarity temperature dependent?
A: Because volume expands with temperature while moles remain constant, molarity decreases slightly when heated.