How is molarity defined in terms of concentration?

Molarity is defined specifically as the number of moles of solute per liter of solution. This definition provides a clear and quantitative measure of concentration, allowing chemists to understand how much solute is present in a given volume of solvent. This is particularly important in chemical reactions, where the concentration of reactants can influence the rate and extent of reactions.

Molarity is expressed in units of moles per liter (mol/L), making it a convenient unit for laboratory work and calculations involving solutions. By knowing the molarity, one can easily determine how much solute is necessary to achieve a desired concentration in a specific volume.

This definition separates molarity from other concepts such as mass or total volume of solutions, which do not offer the same level of specificity regarding the relationship between solute and solution. Molarity is a fundamental concept in chemistry, especially in stoichiometry, where precise measurements are crucial for successful experiments and reactions.