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Question: If a gas is compressed adiabatically by doing work of 150 J, the change in internal energy of the ga...

If a gas is compressed adiabatically by doing work of 150 J, the change in internal energy of the gas is

A

100 J

B

150 J

C

200 J

D

250 J

Answer

150 J

Explanation

Solution

: since the gas is compressed adiabatically, then

dQ=0anddW=−150JdQ = 0anddW = - 150J

From first law of thermodynamics

}{\therefore dU = - dW = - ( - 150) = 150J}$$