Q617
Unit of molal diffusivity is
A.
cm2/sec gm.mole
AnswerB.
gm moles/cm2.sec
C.
gm moles/cm.sec
D.
gm moles/cm3.sec
Answer: Option A
Solution
Answer: Option A
Solution:
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.