1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Chemistry - Molar Entropy Question

  1. Jan 24, 2009 #1
    Working this thing on Web Assign. I feel like I've been doing everything 100% correct, yet I keep getting the wrong answer.

    http://img510.imageshack.us/img510/4488/chemkp0.jpg [Broken]

    Basically, I need help on part B and C

    What I did for B, I tried to calculate Delta S by using the equation n Cv ln(T2/T1)
    I plugged in Cv given in the problem, used 341 for T2, and 298 for T1. n is One, since its for one mole. And I added the value I get to delta S to S that was given in the problem.

    What have I been doing wrong.
    Last edited by a moderator: May 3, 2017
  2. jcsd
  3. Jan 25, 2009 #2
    Maybe you should be plugging in [tex]C_p[/tex]. The question says that the pressure is 1 atmosphere, even at the higher temperature. Therefore you must be operating at constant pressure and your volume must have increased.
  4. Jan 26, 2009 #3
    I've tried that multiple times. Thanks, though.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook