Q. The correct statement for both the processes of physisorption and chemisorption is

2315 219 AIEEEAIEEE 2012Surface Chemistry Report Error

A

both are endothermic

6%

B

chemisorption is endothermic but physisorption is exothermic

21%

C

both are exothermic

67%

D

physisorption is endothermic but chemisorption is exothermic.

17%

Solution:

Both are exothermic.