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Is it possible to increase the temperature of a gas without adding heat to it ? Explain. |
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Answer» Solution :YES, during adiabatic compression the temperature of a gas increases while no heat is given to it. In an adiabatic compression `DeltaQ = 0` According to the FIRST law of thermodynamics, `DeltaU=dU+dW` `therefore` 0=dU+dW `therefore` dU=-dW In compression work is done on the gas, i.e., work done is NEGATIVE . `therefore` dU=-(-dW)=dW `therefore` dU `gt` 0 positive Hence , INTERNAL energy of the gas increases because `U PROP T`. |
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