# Kinetic theory of gases

## 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

hage567
Homework Helper
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?

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"