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Which statement is not correct regarding the adsorption of a gas on the surface of a solid:

1.	On increasing temperature adsorption increase continuously
2.	Enthalpy & entropy change is negative
3.	Adsorption is more for some specific substance
4.	Reversible

Subtopic: Adsorption and Absorption |

75%

Level 2: 60%+

AIPMT - 2001

Hints

According to the adsorption theory of catalysis, the speed of the reaction increase because:

1.	The concentration of reactant molecules at the active centers of the catalyst becomes high due to adsorption
2.	In the process of adsorption, the activation energy of the molecules becomes large
3.	Adsorption produces heat which increases the speed of the reaction
4.	Adsorption lowers the activation energy of the reaction

Subtopic: Adsorption and Absorption |

Level 4: Below 35%

AIPMT - 2003

Hints