vapor pressure

[daniellao]

Naphthalene, a substance present in some mothballs, has an enthalpy of vaporization of 49.4kl/mol. If the vapor pressure of naphthalene is .300mmhg at 298K, what is the temp at which the vapor pressure is 7.6x10^2mmhg?

[John Cuthber]

http://en.wikipedia.org/wiki/Clapeyron-Clausius_Equation

[swansont]

Things that look like homework aren't going to get answered. If you get stuck, show what you've done and people will help.

[daniellao]

as of so far i tried to put the number into the equation lnp2/p1=hvap/R(1/t1-1/t2)

[hermanntrude]

and what happened?

 

that;s all you need to do. plug the numbers in and solve the equation for T2