What is Molarity
The molarity is defined as the total number of moles of solute present in a given solution per liter. It is also known as “molar concentration” and is read as “molar.” It is represented by the letter “M,” and its unit is mol/L. The molarity of a solution is said to be one molar if one mole of the solute dissolves in one liter of the solution. The molarity of a solution depends on the volume of the solution but not the volume of the solvent.
As the volume of the solutions changes with the change in physical conditions of the system, the molarity of the given solution depends on the physical properties of the system, such as pressure and temperature, unlike mass. There is one drawback of molarity, namely that the volume of most of the solutions slightly depends on temperature due to thermal expansion. Because of this, molarity is not often used in thermodynamics.
Molarity – Definition, Formula and Solved Examples
Molarity is defined as total number of moles of solute per litre of solution. It is represented by M. In chemistry, the molarity is one of the concentration units. The concentration of solutions can be expressed more effectively using measurements based on moles. The SI unit of Molarity is Mole.
A mole is an SI unit that measures the amount of a substance, where the amount of a substance is a measurement of the number of its elementary entities present in an object or sample. According to the definition, a mole contains exactly 6.022 × 1023 elementary entities, where 6.022 × 1023 is called Avogadro’s number (NA). Molarity is used to measure the concentration of a solution, where a concentrated solution is a solution with more solute and less solvent.
Contact Us