## Is free expansion adiabatic or isothermal?

The free expansion is an irreversible process.

which describes an isothermal process, the path between the end points.

The path between the end points is not defined for a free expansion.

Bottom line: A free expansion in an insulated system is adiabatic, but it is not reversible adiabatic..

## Which work done is more adiabatic or isothermal?

Bottom line: The magnitude of the work for the isothermal process for both expansion and compression is greater than the magnitude of the work for the adiabatic process. Although the adiabatic compression work is less negative than the isothermal compression work, the amount of work depends only on its magnitude.

## What is difference between adiabatic and isothermal?

The major difference between these two types of processes is that in the adiabatic process, there is no transfer of heat towards or from the liquid which is considered. Where on the other hand, in the isothermal process, there is a transfer of heat to the surroundings in order to make the overall temperature constant.

## When the work done is maximum and minimum?

Work done by a force on an object is maximum when the movement of the object is in line and direction of the force and it is minimum when the movement of the object is in the opposite direction to that of the force. If no movement is shown by the object. then work done by the force on that object is zero.

## What is the opposite of adiabatic?

In an isothermal process, heat can be added or released from the system just to keep the same temperature while in an adiabatic process, there’s no heat added or released because maintaining constant temperature will not matter.

## What is adiabatic process example?

Adiabatic Process Example It is a process where there is a gas compression and heat is generated. One of the simplest examples would be the release of air from a pneumatic tire. Adiabatic Efficiency is applied to devices such as nozzles, compressors, and turbines. One of the good applications of the adiabatic process.

2 Answers. An adiabatic (zero heat exchanged with the surroundings) process is reversible if the process is slow enough that the system remains in equilibrium throughout the process.

## Is free expansion isothermal?

No free expansion is not a isothermal process because in isothermal process temperature is constant throughout the process but in free expansion the temperature is constant only in initial and final state only because when gas expand its have a kinetic energy and K.E is directly proportional to the temperature so …

## What is work done in adiabatic process?

An adiabatic process is one in which no heat is gained or lost by the system. The first law of thermodynamics with Q=0 shows that all the change in internal energy is in the form of work done.

## Why adiabatic process is fast?

The short answer is: Because heat exchange typically proceeds slowly. Thus, if your process occurs fast enough, heat exchange does not have time to occur in any significant way, and the process is adiabetic for lack of heat exchange.

## Can adiabatic process be isothermal?

For an adiabatic process, in which no heat flows into or out of the gas because its container is well insulated, Q = 0. If there is also no work done, i.e. a free expansion, there is no change in internal energy. For an ideal gas, this means that the process is also isothermal.

Adiabatic Process. An adiabatic process is defined as a process in which no heat transfer takes place. This does not mean that the temperature is constant, but rather that no heat is transferred into or out from the system.

## In which process work done is maximum?

The maximum work is done when the external pressure Pext of the surroundings on the system is equal to P, the pressure of the system. If V is the volume of the system, the work performed as the system moves from state 1 to 2 during an isobaric thermodynamic process, W12, is the maximum work as given by Eq.

## Is free expansion reversible?

Free expansion is considered irreversible, as if it were reversible, it would violate Kelvin Planck statement of 2nd law. We can prove this by the following exercise. First assume that free expansion is a reversible process, means it can spontaneously happen in reverse.

## Why is no work done in free expansion?

Work done = zero because , free expansion is a irreversible adiabatic and isothermal process . Due to isothermal , there is no temperature change and hence no internal energy change occur. … So the work done by the gas is zero. Note that free expansion is an ideal case and it can’t be demonstrated practically.