1. What is Molarity?

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

2. How Does the Calculator Work?

The calculator uses the molarity equation:

Where:

• \( M \) — Molarity (mol/L)
• \( mass \) — Mass of solute (g)
• \( V \) — Volume of solution (L)
• \( MW \) — Molecular weight of solute (g/mol)

Explanation: The equation converts mass to moles using molecular weight, then divides by volume to get concentration.

3. Importance of Molarity Calculation

Details: Accurate molarity calculations are essential for preparing solutions with precise concentrations, which is critical for experiments, reactions, and analytical procedures.

4. Using the Calculator

Tips: Enter mass in grams, volume in liters, and molecular weight in g/mol. All 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 is temperature-dependent while molality is not.

Q2: How do I convert molarity to normality?
A: Normality = Molarity × n (where n is the number of equivalents per mole).

Q3: What if my volume is in mL instead of L?
A: Convert mL to L by dividing by 1000 before entering the value (1 mL = 0.001 L).

Q4: Why is molecular weight important?
A: Molecular weight converts between mass and moles, which is essential for molarity calculations.

Q5: How precise should my measurements be?
A: For most laboratory work, measure mass to at least 3-4 significant figures for accurate molarity.