Manipal MET2016ChemistrySurface Chemistry
During the adsorption of krypton on activated charcoal at low temperature.
Options
- AH 0 and S 0
- BH 0 and S 0
- CH 0 and S 0
- DH 0 and S 0
Correct answer
C. H 0 and S 0
Step-by-step solution
Adsorption is an exothermic process thus, H is negative (i.e. H 0 ). Moreover, adsorption results in more ordered arrangements of molecules, thus entropy decreases (i.e. S 0 ). Hence, low temperature favours the reaction.