Which of the following statements are correct with respect to adsorption of gases on a solid ?
(i) The ectent of adsorption is equal to `KP^(n)` according to Freundlich isotherm.
(ii) The extent of adsorption is equal to `KP^(1//n)` according to Frendlich isotherm.
(iii) The extent of adsorption is equal to (1+bP)/aP according to Langmuir isotherm.
(iv) The extent of adsorption is equal to aP/(1+bP) according to Langmuir isotherm.
(v) Freundlich adsorption isotherm fails at low temperature.

Options

A. 1 and 3
B. 1 and 4
C. 2 and 3
D. 2 and 4

Answer

D

Explanation

According to Freundlich isother, `x/m=kP^(1//n)`
According to Langmuir isotherm,` x/m=(aP)/(1+bp).`