If an ideal gas- constant temperature and pressure- expands- then its internal energy increasesentropy increases and then decreaseinternal energy decreasesinternal energy remains the same

Question

Toppr Admin · Accepted Answer

Internal energy at any state is a function of the number of moles n and the temperature- If the volume expansion takes place at constant temperature and pressure we see that using the gas equation PV-nRT- we get V-x221D-n and thus the number of moles of gas is increasing-maybe the gas is being introduced by an external agent- thus internal energy is increasing-

If an ideal gas, at constant temperature and pressure, expands, then its internal energy increasesentropy increases and then decreaseinternal energy decreasesinternal energy remains the same

If an ideal gas, at constant temperature and pressure, expands, then its

internal energy increases
entropy increases and then decrease
internal energy decreases
internal energy remains the same