1. What is Density to Molarity Conversion?

The density to molarity conversion allows you to calculate the concentration of a solution in moles per liter (molarity) when you know its density (mass per unit volume) and the molecular weight of the solute.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( M \) — Molarity (mol/L)
• \( Density \) — Density of the solution (g/mL)
• \( MW \) — Molecular weight of the solute (g/mol)

Explanation: The formula converts density (g/mL) to g/L by multiplying by 1000, then divides by molecular weight to get moles per liter.

3. Importance of Molarity Calculation

Details: Molarity is a fundamental concept in chemistry for preparing solutions, conducting experiments, and performing stoichiometric calculations in reactions.

4. Using the Calculator

Tips: Enter density in g/mL and molecular weight in g/mol. Both values must be positive numbers. The calculator will output molarity in mol/L.

5. Frequently Asked Questions (FAQ)

Q1: Why multiply density by 1000?
A: We multiply by 1000 to convert g/mL to g/L (since there are 1000 mL in 1 L) before converting to moles.

Q2: Can I use this for any solute?
A: Yes, as long as you know the exact molecular weight of the solute and the solution density.

Q3: Does this work for mixtures?
A: No, this calculation is for single-solute solutions. For mixtures, you would need to know the exact composition.

Q4: What's the difference between molarity and molality?
A: Molarity is moles per liter of solution, while molality is moles per kilogram of solvent.

Q5: How temperature affects this calculation?
A: Density changes with temperature, so ensure your density measurement is at the same temperature as your intended application.