If 1 liter of solution has 0.1 mole solute then it is called decimolar solution. Decimolar solution means the molarity of solution is M/10 or 0.1 M. That is, 0.1 mole of solute is dissolved in 1 L of solution. Since, 1 L=1/1000 m3, therefore it can be said, 0.1 mole of solute is dissolved in 1/1000 m3 volume of solution.
For example, a 0.1 M HCl solution would be considered a decimolar solution of hydrochloric acid.
Molarity is a unit of concentration that measures the number of moles of a solute per liter of solution.
