Why is heat of chemisorption greater than that of physisorption?

Why heat of chemisorption is more than heat of physisorption?

Which of the following statements is not true? a. Both physisorption and chemisorption are exothermic. b. Physisorption occurs with increase of free energy. c. Physisorption requires low activation energy but chemisorption requires high activation energy. d. The magnitude of chemisorption increases and that of physisorption decreases with rise in temperature.

Which of the following statements is not true? a. Both physisorption and chemisorption are exothermic. b. Physisorption occurs with increase of free energy. c. Physisorption requires low activation energy but chemisorption requires high activation energy. d. The magnitude of chemisorption increases and that of physisorption decreases with rise in temperature.

Account for the following: all values of chemisorption are more than those for physisorption.

Heat of chemisorption _____________ is than heat of physisorption.

Heat of adsorption is greater for chemisorptions than physisorption. Why?