What will be the sign of ∆G for the melting of ice at 267K and at 276K?
Melting point temperature of ice = 273 K.
Thus, at 267 K, the process is non-spontaneous (∆G = +ve) while at 276K, it becomes spontaneous (∆G = –ve).
What do you understand by:
(i) Isothermal process
(ii) Adiabatic process
(iii) Isobaric process
(iv) Isochoric process
(v) Cyclic process?
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.