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)
• \( n \) — Amount of substance (moles)
• \( V \) — Volume of solution (liters)

Explanation: The formula calculates how concentrated a solution is by dividing the number of moles of solute by the volume of the solution.

3. Importance of Molarity Calculation

Details: Molarity is crucial for preparing solutions with precise concentrations, performing chemical reactions with accurate stoichiometry, and conducting quantitative analysis in chemistry.

4. Using the Calculator

Tips: Enter the amount of substance in moles and the volume in liters. Both values must be positive numbers. The calculator will compute the molarity 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, while 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) to get moles.

Q3: What are typical molarity values?
A: Concentrations range from millimolar (mM, 10⁻³ M) to molar (M) for most laboratory solutions.

Q4: How does dilution affect molarity?
A: Diluting a solution (adding more solvent) decreases its molarity proportionally to the dilution factor.

Q5: Why use molarity instead of other concentration units?
A: Molarity is convenient for stoichiometric calculations since it relates directly to the number of molecules or ions in solution.