Chemistry, asked by sushilbhope1914, 11 months ago

How to find final temperature in an adiabatic process?

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Answered by Anonymous

33

Answer:

A sample of 4.0 moles of a gas (Cv,m=21 Jmol−1K−1) has an initial pressure of 304.4 kPa and an initial volume of 20 dm3 at 270 K. It undergoes an adiabatic expansion against a constant external pressure of 79.8 kPa, until the volume has increased by a factor of 3. Calculate the final temperature.

I have calculated: Q=0 and w=−3192 J and change in internal energy =ΔU=−31922 J.

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