1john post 15 equation ... symbol ka meaning likh nahi rahe hai .. khud dekh lena . .because now i have to go ...
The vapour pressure of water at 15°C is 22 mm of Hg. What will be the vapour pressure of water at 30°C .. Assume that 540 cal of heat is reqd to convert water to vapour.
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1ln ( P2 /P1 ) = ΔHv(T2 - T1)/T2*T1*R
ln ( P2 /22) = 540 * 15 / 288 * 303 * 2
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1@ankit
wat is Clapeyron - Clausius equation actually i mean tell the meaning of all the symbols u used
106ankit most of the buks use this relation as Vant Hoff eqn only
@john: i thot of it wen my sir was explaining VP .. he explained it by using equilibrium so i thot and gave a question..
1naaaaahhhhhhhiiiiiiiii ise vant hoff equation nahi bolete hai ... this equation was given by Clapeyron - Clausius
and this must be an old sum .. this was there in syllabus 3/4 yrs ago ..now it is not there :)
1really a gud ques.........from where(which book/source)..........ashish??????????????????
106Yes ankits solution is correct.
IT is just the equilibrium of H2O(l) -><- H2O(g)
the equilibrium constant Kp = Vapour Pressure
So u can use the eqn given by ankit to find out the vapour pressure
1wat's this formula?????????i never studied ne such thing in solutions!!!!!!!
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where the temperature Tb is the boiling point temperature in degrees Celsius and the pressure P is in Torr.
got this formula .. but i don't think it is of any use :(