Consider the following statement about Langmuir isotherm :
(i) The free gas and adsorbed gas are in dynamic equilibrium
(ii) All adsorption sites are equivalent
(iii) The initially adsorbed layer can act as a substrate for further adsorption.
(iv) The ability of a molecule to get adsorbed at a given site is independent of the occuption of neighbouring sites
The correct statement are

Options

A. (i),(ii),(iii) and (iv)
B. only (i),(ii) and (iv)
C. only (i),(iii) and (iv)
D. only (i),(ii) and (iii)

Answer

C

Explanation

Factually incorrect.
The initially adsorbed layer cannot act as a sunstarte for further adsorption.