Question

Compare isothermal and an adiabatic process.

Answer 1

Isobaric expansion: As p=F/Ap=F/A applies to the force of piston over area. The system is in isobaric equilibrium as long as the force does not change. In order for volume to increase, heat must enters the system to increase internal energy, leading to increase in volume.

Isothermal expansion: takes in heat from a heat reservoir, convert that heat into work energy and the system expands in volume. As temperature must remain constant, the heat energy absorbed is converted into work energy instead of internal energy. (But if heat is converted to internal energy, wouldn't the system increase in volume as well?)

Adiabatic expansion: As Q=0Q=0, work should be constant.

Hope this helped you..

Answer 2

HLO MATE HERE IS UR ANSWER.

❤. ISOTHERMAL PROCESS ❤

⭐. The process in which pressure and volume changes occur at constant temperature is called "isothermal process".

• In isothermal process, temperature remains constant and heat exchanges between system and surroundings
• This process should be performed in a good conducting vessel.
• It is a slow process.
• Gas law PV= constant, holds true.
• Specific heat is infinity.
• External work done is zero.
• First law of Thermodynamics become dQ= dU
• Ex: Boiling of water in open air.

❤. ADIABATIC PROCESS ❤

⭐. A process in which changes in pressure and volume of a gad take place at constant amount of heat energy is called "Adiabatic process".

• In Adiabatic process, total heat remains constant and temperature changes between system and surroundings.
• This process should be performed in a bad conducting vessel.
• It is a quick process.
• Gas law PVgama = constant , hold true.
• Specific heat is zero.
• There is some external work done.
• First law of Thermodynamics becomes dU+dW =0.
• Ex: Compressing an ideal gas quickly .