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Kinetic theory of gases

  • Thread starter vijiraghs
  • Start date
  • #1
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Homework Statement



Two moles of an ideal gas expand to double the initial volume at a constant temperature of 400 K. Calculate the work done by the process.

Homework Equations



W=2.303nRTlog(v2/v1)

The Attempt at a Solution



i tried the formula and got 4613.959 J but the answer is 554.6 J
 
Last edited:

Answers and Replies

  • #2
hage567
Homework Helper
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Are you sure it isn't log(V2/V1)? I'm used to the form W=nRTln(V2/V1). I can't get either of those answers. Can you show how you got that?
 
  • #3
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Are you sure it isn't log(V2/V1)? I'm used to the form W=nRTln(V2/V1). I can't get either of those answers. Can you show how you got that?
n=2; v2=2*v1;T=400 K; R=8.32

W=2.303nRTlog(v2/v1)
= 2.303*2*8.32*400*log(2v1/v1)
= 2.303*2*8.32*400*log(2)
= 2.303*2*8.32*400*0.3010
= 4613.959

we generally use logarithms and i dont know wat is "ln"
 

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