Give reasons for the following: (a) Enzyme catalysts are highly specific in their action. (b) The path of light becomes visible when it is passed through As_(2)S_(3) sol in water. (c) The enthalpy in case of chemisorption is usually higher than that of physisorption.

Give reasons for the following: (a) Enzyme catalysts are highly specif

1.	Give reasons for the following: (a) Enzyme catalysts are highly specific in their action. (b) The path of light becomes visible when it is passed through As_(2)S_(3) sol in water. (c) The enthalpy in case of chemisorption is usually higher than that of physisorption.
Answer» SOLUTION :(a) This is because each enzyme has a specific active site on which only a particular substrate can bind. (B) This is because of Tyndall effect CAUSED due to the scattering of light by COLLOIDAL particles of `As_(2)S_(3)` sol. (c) Chemisorption INVOLVES the formation of a chemical bond between adsorbent and adsorbate molecule which involves high energy changes while in physisorption, the molecules of adsorbate and adsorbent are held by weak van der Waals. interactions.