What is isothermal process?

An isothermal process is a constant temperature process. Any heat flow into or out of the system must be slow enough to maintain thermal equilibrium

For ideal gases, if ΔT is zero, ΔU = 0

Therefore, Q = W

Any energy entering the system (Q) must leave as work (W)

P,V may change but temperature is constant

  • The cylinder must have conducting walls
  • It must happen very slowly so that heat produced during compression is absorbed by surroundings and heat lost during compression is supplied by surroundings.

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