At 70K, the adsorption of N2 (g) at iron surface obeys Freundlich adsorption isotherm. The following data is collected experimentally:




Where x/m is the mass (in g) of N2 (g) adsorbed per g of iron at ‘P’ bar pressure. The number of moles of N2 (g) adsorbed per g iron at 36 bar and 70K is:
A. 3/10
B.3/140
C.3/70
D.3/280