Adiabatical Compression Question

[Reptic]

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

In picture...[/B]

 

[TSny]

Is PV = nRT valid for the Celsius temperature scale?

 

[Reptic]

no, should be kelvin 293 right?

 

[TSny]

Yes, you need to use an absolute temperature scale such as Kelvin.

 

[Chestermiller]

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