Unit of molal diffusivity is
Unit of molal diffusivity is Correct Answer cm<sup>2</sup>/sec gm.mole
Molal diffusivity (Dm) is a measure of how quickly a substance diffuses through a solvent when there is a concentration gradient between them.The unit of molal diffusivity is typically expressed in terms of square centimeters per second (cm2/s) multiplied by the number of grams (gm) of the solute per mole (mole) of the solute.
So, the correct unit for molal diffusivity is cm2/sec gm.mole, which corresponds to option A.