Solved: The free expansion of an ideal gas is an adiabatic

Chapter 20, Problem 18DQ

(choose chapter or problem)

Get Unlimited Answers
QUESTION:

Problem 18DQ

The free expansion of a gas is an adiabatic process and so no heat is transferred. No work is done, so the internal energy does not change. Thus, \(Q / T=0\), yet the disorder of the system and thus its entropy have increased after the expansion. Why does Eq. (20.19) not apply to this situation?

Equation Transcription:

Text Transcription:

Q/T=0

Questions & Answers

QUESTION:

Problem 18DQ

The free expansion of a gas is an adiabatic process and so no heat is transferred. No work is done, so the internal energy does not change. Thus, \(Q / T=0\), yet the disorder of the system and thus its entropy have increased after the expansion. Why does Eq. (20.19) not apply to this situation?

Equation Transcription:

Text Transcription:

Q/T=0

ANSWER:

Solution 18DQ

Step 1:

An adiabatic process in which there is no heat transfer takes place

An adiabatic process for an ideal gas , as the gas expands from volume a positive work is done

Add to cart


Study Tools You Might Need

Not The Solution You Need? Search for Your Answer Here:

×

Login

Login or Sign up for access to all of our study tools and educational content!

Forgot password?
Register Now

×

Register

Sign up for access to all content on our site!

Or login if you already have an account

×

Reset password

If you have an active account we’ll send you an e-mail for password recovery

Or login if you have your password back