Flag Physical Chemistry> gaseous-state...
question mark

Why the "vander-waals" forces are stronger near the critical temperature in case of gasses? Please give a brief and accurate explanation.

anurag bhattacharjee , 12 Years ago
Grade Upto college level
anser 1 Answers
Aman Bansal

Last Activity: 12 Years ago

Dear Anurag,

Its not that van der waals forces are stronger only at critical temperature , there effect is stronger as we go down the temperature, its just that,

above critical temperature kinetic energy of gaseaous molecules is high which can''''t be countered by van der waals forces by appling any pressure, but as a gas reaches its critical temperature it''''s moleculer kinetic energy becomes low hence can be countered by van-der-waals forces at any certain pressure, allowing liquification of gas.

Also a gas below its critical temperature is called vapour.

Cracking IIT just got more exciting,It s not just all about getting assistance from IITians, alongside Target Achievement and Rewards play an important role. ASKIITIANS has it all for you, wherein you get assistance only from IITians for your preparation and win by answering queries in the discussion forums. 

http://www.askiitians.com/packages/packages.aspx

So start the brain storming…. become a leader with Elite Expert League ASKIITIANS

Thanks

Aman Bansal

Askiitian Expert


star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments