During Adsorption of a gas on a solid

(a) What is coagulation of sol ? name two methods by which a lyophobic sol can be coagulated. (b) What is the change in enthalpy and entropy during adsorption of gas on a solid ?

The extent of adsorption of a gas on a solid depends on

During the adsorption of a gas on the surface of a solid , which of the following is true ?

(a) Mention two factors which affect adsorption of a gas on a solid. (b) Is synthesis of ammonia by Haber's process, a homogeneous or heterogeneous catalysis? (c) State Hardy-Schulze rule. Among Al_(2) (SO_(4))_(3) and (NH_(4))_(3) PO_(4) which is better coagulating agent for a negative sol?

In the adsorption of a gas on solid, Freundlich isotherm is obeyed. The slope of the plot is zero. The extent of adsorption is