Osmolality vs Osmolarity

Question 1

Osmolality and Osmolarity are both terms used in reference to the concentration of a solution. The only difference is-

Answer 1

One is per liter and one is per kilogram

Question 2

Osmolarity =

Answer 2

The concentration of a solute (particles) per liter of a solution.

(The solvent does not have to be water).

Question 3

Osmolality =

Answer 3

The concentration of solute (particles) per kilogram of water.

Osmolality controls the movement of fluid of the compartments.