What is the formula for calculating molar concentration?

Molar concentration, also known as molarity, is a way of expressing the concentration of a solute in a solution. The correct formula for calculating molar concentration is based on the amount of solute in moles divided by the volume of the solution in cubic decimeters (dm³).

This relationship reflects how concentrated a solution is, as it directly relates the quantity of solute present (in terms of the number of moles) to the volume of solvent it is dissolved in. Hence, by using this formula, one can easily determine how many moles of solute are present per liter (or cubic decimeter) of the solution.

Understanding that molarity is fundamentally about moles and the volume of the solution is critical in chemistry, especially when preparing solutions and performing dilutions or stoichiometric calculations.