Molar concentration

Molar concentration is the amount of a substance, in moles, per unit volume of solution. It is commonly expressed in moles per litre (mol/L).

Amount concentration: A measure of the amount of a constituent divided by the volume of a mixture. Molar concentration is the amount-per-volume measure specifically applied to substances in solution.
Solute: A substance dissolved in a solvent to form a solution. The solute is the substance whose amount determines the concentration.
Standard solution: A solution whose concentration is known accurately. Its stated molar concentration makes it suitable for quantitative analysis.
Normality: A concentration measure expressed as reactive equivalents of solute per litre of solution. Its value depends on the reaction’s equivalent definition, unlike molar concentration.
Sodium chloride: An ionic compound with formula NaCl, commonly known as table salt. Dissolving a measured amount in a known solution volume gives a familiar molar concentration example.
Mole: The SI unit for amount of substance, defined as exactly 6.02214076 × 10²³ specified entities. Molar concentration counts dissolved substance using this unit.
Solution: A homogeneous mixture of two or more substances. Molar concentration is defined using the volume of the complete solution, not just its solvent.
Volumetric flask: Laboratory glassware designed to contain a precise volume at a specified temperature. It sets a solution’s final volume when preparing a target molar concentration.
Osmolarity: The total concentration of osmotically active particles per litre of solution. It counts particles produced by dissolved substances rather than moles of a specified solute.
Hydrochloric acid: An aqueous solution of hydrogen chloride, commonly used as a strong acid. Its concentration is commonly specified in mol/L for reaction and titration calculations.

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