Question

The unit of molarity is mol.L.
A. True
B. False

Answer 1

Hint: The unit of molarity can be determined by defining the term molarity. The molarity is also symbolised as M. It is also known to be a molar concentration of a solution. So, the unit of molarity can be calculated.

Complete step by step answer:

First, let us discuss the molarity. Molarity is termed used to define the measures of a concentration of a chemical solution. It is related to moles of a solute with the volume of a solution.

If we define the molarity, it is the amount of a substance in a specific volume of a given solution, or we can say it is the moles of a solute per litres of a solution.
Now, determining the unit of molarity, we can write it accordingly, i.e.

M = moles of a solute/ volume of a solution
M = mol / L

We can say the units are M, or mol/L. A solution is said to be 1 M when the concentration of solution is 1mol/ L.

Thus, the unit of molarity is mol/ L. So, the given statement is wrong. The correct option is (B).

Note: Don’t get confused with the two terms molarity, and molality. We have already defined the molarity. Molality is used to define the relation of moles of solute with the mass of a solvent. The SI unit of molality is mol/kg, i.e. moles of solute per kilograms of a solvent.