Question

Account for the following: Physisorption is multilayered while chemisorption is monolayered.

Answer 1

In physical adsorption occurs due to inter-molecular attractive forces between the adsorbate and adsorbent. If the size of adsorbent pores is close to the size of adsorbate molecules,multilayer adsorption takes place i.e adsorption takes place until all the pores are filled with adsorbate molecules.

whereas, in chemisorption;chemical bonds are formed between adsorbate and adsobent molecules.therefore, it is monolayer