An ideal gas undergoes isothermal process from some initial state `i` to final state `f`. Choose the correct alternatives.

Options

A. dU=0
B. dQ=0
C. dQ=dU
D. dQ=dW

Answer

A, D

Explanation

For an isotehrmal process change in temperature of the system `dT=0rArrT=` constant .
We know that for an ideal gas dU=change in internal energy =`nC_(v)dT=0`
[where, n is number of moles and `C_(v)` is specific heat capacity at constant volume] From first law of thermodynamics,
`dQ=dU+dW`
`=0+dWrArrdQ=dQ`