Adiabatical Compression Question

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Air at 20°C is compressed adiabatically from 1 bar to 10 bar, raising its temperature. The ideal gas law (PV = nRT) requires using an absolute temperature scale, such as Kelvin, for accurate calculations. The first law of thermodynamics is relevant in this context, and it's important to consider whether the compression is reversible. The discussion emphasizes the need for correct temperature units and thermodynamic principles in solving the problem. Understanding these concepts is crucial for determining the final temperature after adiabatic compression.
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Homework Statement


Air at 20C is compressed adiabetically from 1 bar to 10 bar. What will its temperature be?

Homework Equations


pV = nRT,
P1P2=T1T2
P1Vλ1=P2V2λ

The Attempt at a Solution

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Is PV = nRT valid for the Celsius temperature scale?
 
no, should be kelvin 293 right?
 
Yes, you need to use an absolute temperature scale such as Kelvin.
 
Reptic said:
no, should be kelvin 293 right?
Are you familiar with the first law of thermodynamics? Are you supposed to assume that the compression takes place reversibly?

Chet
 

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