Molarity Calculator

Calculate the molar concentration of a solution instantly.

Molarity Calculator

Calculate the molar concentration of a solution.

Mass of Solute (g)

Volume of Solution (L)

Molecular Weight (g/mol)

Understanding the Molarity Calculator

Quickly calculate the molar concentration (molarity) of a solution given the mass of the solute, its molecular weight, and the total volume of the solution. This tool is essential for chemists and students preparing laboratory reagents.

Guide

How to use the Molarity Calculator

1Enter the 'Mass of Solute' in grams (g).
2Input the 'Volume of Solution' in Liters (L).
3Provide the 'Molecular Weight' of the solute in grams per mole (g/mol).
4Click 'Calculate Molarity' to determine the concentration in moles per liter (M).

Applications

Common Use Cases

Solution Preparation: Calculating how much solute to weigh for a specific concentration.

Stoichiometry: Determining the concentration of reactants for chemical reactions.

Analytical Chemistry: Quantifying the concentration of unknown samples in titrations.

Lab Safety: Ensuring correct dilutions of concentrated acids and bases.

The Maths Behind the Calculation

M = (m / MW) / V

Molarity (M) is the number of moles of solute per liter of solution. Moles are calculated by dividing the mass (m) by the molecular weight (MW).

Knowledge Base

Frequently Asked Questions

What is Molarity?

Molarity (M) is a unit of concentration defined as the number of moles of solute dissolved in exactly 1 liter of total solution.

How do I calculate Molecular Weight?

Add up the atomic masses of all atoms in the chemical formula. You can use our Molecular Weight Calculator for this!

Does molarity change with temperature?

Yes, because the volume of a liquid expands or contracts with temperature, the molarity of a solution changes slightly as temperature fluctuates.

Regional Notice: United States

"Federal tax estimates are based on 2024 brackets. Consult a tax professional for official filing."