Why does a gas get heated on compression?
(N/A) When a gas is compressed,work is done on the gas by the external agent. According to the first law of thermodynamics,$\Delta Q = \Delta U + \Delta W$. In a rapid compression (adiabatic process),$\Delta Q = 0$. Therefore,$\Delta U = -\Delta W$. Since work is done on the gas,$\Delta W$ is negative,which makes $\Delta U$ positive. An increase in internal energy $(\Delta U)$ leads to an increase in the temperature of the gas.
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