Question

Which of the following is an assumption for B.E.T theory?

(a) The solid surface possess uniform, localised sites

(b) The adsorption at one site does not affect adsorption at neighbouring site

(c) Physical adsorption of adsorbate occurs resulting in the formation of multilayers

(d) All of the mentioned

I have been asked this question in my homework.

My doubt is from B. E. T. Adsorption Isotherm topic in division Criteria of Purity and Characterisation of Materials of Engineering Chemistry I

Answer 1

Right answer is (d) All of the mentioned

To elaborate: The assumptions for B.E.T theory are – the solid surface possess uniform, localised sites, the adsorption at one site does not affect adsorption at neighbouring site and physical adsorption of adsorbate occurs resulting in formation of multilayers, etc.