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molarity

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EntityQ672821· pop 45· linked from 603 articles

Also known as amount concentration, substance concentration, amount of substance concentration, molar concentration, amount-of-substance concentration

measure of the concentration of a solute in a solution, or of any chemical species, in terms of amount of substance in a given volume; most commonly expressed in units of moles of solute per litre of solution

Key facts

Common symbols
c , [chemical symbol or formula]
Si unit
mol/m
Other units
mol/L, M
Derivations from other quantities
c = n / V
Dimension
L − 3 N {\displaystyle {\mathsf {L}}^{-3}{\mathsf {N}}}

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Molar concentration (also called amount-of-substance concentration or molarity) is the number of moles of solute per liter of solution. Specifically, it is a measure of the concentration of a chemical species, in particular, of a solute in a solution, in terms of amount of substance per unit volume of solution. In chemistry, the most commonly used unit for molarity is the number of moles per liter, having the unit symbol mol/L or mol/dm (1000 mol/m) (really (mol/m)/1000) in SI units. Molar concentration is often depicted with square brackets around the substance of interest; for example, the molarity of the hydronium ion is denoted as [H3O].

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