Question

a monatomically ideal gas is expanded at 300K isotherm/ the volume increases from 3 * 10^-2 m^3 to 0.15 m^3. the final pressure of the gas is 60kPa. The ideal gas constantee is R=8.314 J/mol*K. the change of the internal energy of the gas is

Answer 1

Ans: change in internal energy of the gas is 0

Internal energy of an ideal gas is only function of the temperature.

So for ideal gas internal energy changes only when the temperature of the gas is changed.

If there is no change in temperature then internal energy of the gas will remain unchanged i.e change in internal energy will be 0.

Here it is clearly mentioned in the question that the process is an isothermal process occurring at 300K.

So here also change in internal energy will be 0.

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answered by: anonymous