Molar solution is used when referring to the molarity of a solution, which expresses its concentration. This page refers to concentration in the chemical sense. ... This article or section should be merged with solvent, soluble, and solubility equilibrium Dissolving table salt in water In chemistry, a solution is one or more substance (the solute) dissolved in another substance (the solvent) forming a homogenous mixture. ... This page refers to concentration in the chemical sense. ...

For example, a five molar solution of aqueous hydrochloric acid (written as "5M HCl (aq)") means there are 5 moles of HCl per liter of solution. If the solvent is not mentionned (such as "5M NaOH"), it is safe to assume that the solvent is water or the one most commonly used with that solute. Drinking water This article focuses on water as we experience it every day. ... The chemical substance hydrochloric acid is the aqueous (water-based) solution of hydrogen chloride (HCl) gas. ... The mole (symbol: mol) is one of the seven SI base units and is commonly used in chemistry. ... The litre (or liter in US) is a metric unit of volume. ... A solvent is a liquid that dissolves a solid, liquid, or gaseous solute, resulting in a solution. ...

For work with aqueous solutions, concentrations expressed in terms of molarity are most useful when performing stoichiometric calculations since easily measured volumes correspond directly to moles of chemical substances involved. In chemistry, stoichiometry is the study of the combination of elements in chemical reactions. ...