Question
Classify the following processes as reversible or irreversible:
(i) mixing of two gases by diffusion.
(ii) dissolution of sodium chloride in water
(iii) evaporation of water at 373 K at 1 atm pressure
(iv) expansion of a gas in vacuum.
Solution
(i) Irreversible
(ii) Irreversible.
(ii) Reversible
(iv) Irreversible.