Concentrations of solutions in chemistry are usually expressed as molarity, which is the number of moles of solute per liter of solution. To find the molarity of a solution requires knowing the mass of dissolved solute the volume of the solution and molar mass of the solute.
Thus molarity has the units moles per liter (mol L-1). By convention, we use square brackets [ ] to represent molarity.
"Molarity is defined as the number of moles of solute dissolved in 1 liter of solution."
Molarity Formula is given below.
The molar unit is probably the most commonly used chemical unit of measurement. Molarity is the number of moles of a solute dissolved in a liter of solution. A molar solution of sodium chloride is made by placing 1 mole of a solute into a 1-liter volumetric flask. (Taking data from the example above we will use 58 grams of sodium chloride). Water is then added to the volumetric flask up to the one liter line. The result is a one molar solution of sodium chloride.