M

Molarity

Expert Written | Fact Checked | Sources Cited | AllChemicals Editorial Team

What is Molarity?

Molarity (M) is the most common measure of solution concentration, defined as the number of moles of solute dissolved per litre of solution (mol/L). It is used to calculate the amounts of reactants and products in solution reactions. Molarity changes with temperature (as volume changes), which is a limitation compared to molality for precise thermodynamic calculations.

Key Facts

Term Molarity

Frequently Asked Questions

Molarity (M) is the most common measure of solution concentration, defined as the number of moles of solute dissolved per litre of solution (mol/L). It is used to calculate the amounts of reactants and products in solution reactions. Molarity changes with temperature (as volume changes), which is a limitation compared to molality for precise thermodynamic calculations.

More "M" Terms

View all "M" terms →
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.