MyAccount
|
Live Chat
Home
About Us
Discussion Board
Articles
AIEEE
Packages
FAQs
Careers
Contact Us
IIT JEE Study Material – IIT JEE Chemistry – Physical Chemistry
Chemistry
>
Physical Chemistry
>
Surface Chemistry
>
Characteristics of catalytic reactions
Catalysis Topics
Introduction to Catalysis
|
Characteristics of Catalytic reactions
|
Types of Catalysts
|
Nature of Solid Catalysts
|
Shape Selective Catalysis by Zeolites
|
Enzyme Catalysis
|
Catalysts in Industry
|
Summary of Adsorption & Catalysis
|
Keywords of Adsorption & Catalysis
________________________________________________________________________________
Characteristics of Catalytic Reactions
(i)
The catalyst remains unchanged in amount and chemical composition at the end of the reaction; it may, however, undergo considerable change in physical form.
(ii)
A small quantity of the catalyst is capable of producing the desired effect.
(iii)
The action of a catalyst is specific to a large extent. Thus, the decomposition of KCIO3 is catalyzed by MnO
2
but not by platinum.
(iv)
The catalyst does not initiate a reaction; it merely accelerates the reaction that is already occurring.
(v)
A catalyst does not alter the final state of equilibrium in a reversible reaction.
A certain minimum energy must be possessed by the reactants so that they may react and produce the products. This is called the activation energy (Ea) for the reaction. A catalyst is said to lower the activation energy and thus increase the rate of the reaction.
Thus, a catalyst increases the rate of a reaction by providing a pathway whose activation energy is lower than the activation energy of the uncatalysed reaction.
Ask an IITian For Free!
Register for Free Trial Session!
Become a Franchisee
IIT JEE Online Coaching
IIT JEE Free Online Test Series
IIT JEE Resources
IIT JEE 2010 Exam Details
IIT JEE Study Material
IIT JEE Past Papers
Mock Test Papers
IIT JEE Forums
IIT JEE Online Coaching
IIT JEE Online Coaching for NRIs
Important Books For IIT JEE
Top Engineering Colleges
Colleges Information
IIT JEE Syllabus
IIT JEE Course Details
IIT JEE Online Tutors
Olympiads
IIT JEE 2009
AIEEE 2009
Sponsored Links
Home
|
About Us
|
Services
|
Packages
|
FAQ
|
Careers
|
Contact Us
|
Sitemap
|
copyright © 2006 askIITians.com
IIT JEE Math Crash Courses
|
IIT JEE Physics Crash Courses
|
IIT JEE Chemistry Crash Courses
|
AQAD
|
AIEEE
|
Test Papers IIT-JEE
|
Discussion forum
|
Articles
Mock Test Papers
|
Top Engineering Colleges
|
Important Books For IIT-JEE
|
IIT Study Material
|
IIT
|
IIT Test Series
|
RIP-1
RIP-2
|
AIEEE Past Papers
|
Discuss with askIITians Tutors
|
IIT JEE Coaching