Entropy problem -- heating 2 moles of an ideal gas....

AI Thread Summary
The discussion centers on calculating the change in entropy for 2 moles of an ideal gas heated from 50°C to 150°C while expanding from 100L to 150L. The formula for change in entropy is provided, emphasizing the need for understanding the equation of state for a perfect gas. Participants express confusion about entropy calculations and the importance of demonstrating effort in problem-solving. One response stresses that without any initial effort or understanding, it is challenging to provide assistance. The conversation highlights the necessity of engaging with the material before seeking help.
zerorin
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Moderator's Note: THIS HOMEWORK WAS POSTED IN ANOTHER FORUM, SO THERE IS NO TEMPLATE.

calculate the change in entropy suffered by 2 moles of an ideal gas on being heated from a volume of 100L at 50C to a volume of 150L at 150C. for the gas Cv=7.88 cal/moleC.

I'm really confused in entropy and don't know where to start..
 
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The change in entropy for a reversible process is

DS = int (dQrev/T)

You should be able to calculate this if you know the equation of state for a perfect gas
 
zerorin said:
calculate the change in entropy suffered by 2 moles of an ideal gas on being heated from a volume of 100L at 50C to a volume of 150L at 150C. for the gas Cv=7.88 cal/moleC.

I'm really confused in entropy and don't know where to start..
You have shown no effort to solve this problem. We need to see some effort on your part, even if it is something as little as articulating what entropy is and how it is calculated. How can we help you if we don't know what your sticking point is? Please do not post homework problems with no effort in the future.
 
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