Which of the following statement(s) is/are correct regarding adsorption? — Surface Chemistry Chemistry Question

💡 Solution & Explanation

Activated adsorption (chemisorption) involves chemical bond formation and is highly specific. Van der Waals adsorption (physisorption) involves weak physical forces and is reversible. Adsorption always releases heat, making it an exothermic process. It involves a decrease in entropy (not iso-entropic) because the randomness of gas molecules decreases. Therefore, correct answer is A,B,C.