1.

Physical adsorption of a gaseous species may change to chemical adsorption with ________ .

Answer»

decrease in temperature
increase in temperature
increase in surface AREA of adsorbent
decrease in surface area of adsorbent

Solution :At HIGHER temperature, gaseous molecules may dissociate into atoms which are then chemisorbed, e.g., `N_2` GAS on IRON surface at temperature above 773 K.


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