Why reversible work done is maximum?

The reversible expansion does the maximum amount of work because the gas is pushing against the maximum possible external pressure.

Why work done in reversible process is greater than irreversible?

The reason why more work is done by the system in a reversible process than an irreversible process is entropy is generated within the gas in an irreversible process. Whenever entropy is generated within the system there is a lost opportunity for the system to perform useful work.

Why work done in reversible isothermal process is maximum?

In any expansion, the external pressure must be less than the pressure of the gas. If the external pressure is zero, the work done is also zero as the gas expands into the vacuum. Therefore work done in an isothermal reversible expansion of an ideal gas is maximum work.

In which process is the work done maximum?

The work done in adiabatic process is maximum. This is because the rate of pressure increase is faster in the adiabatic process as all the energy of the work done on the system increases its internal energy.

Why is reversible process impossible?

Having been reversed, it leaves no change in either the system or the surroundings. Since it would take an infinite amount of time for the reversible process to finish, perfectly reversible processes are impossible.

Why is work done maximum in isobaric process?

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. (1).

Why is irreversible work less than reversible?

The key feature why the irreversible work is smaller than the reversible work is the magnitude of the external pressure against which the irreversible work is done against. If you were to increase the external pressure by a factor of two then the irreversible work would be greater.

Why work done is maximum in isobaric?

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.

When the work done is maximum and minimum?

If the applied force is in one direction and the displacement of the body is in the opposite direction, then work done is minimum as COS 180 is equal to minus one. This is the minimum possible work done and work done is maximum when force and displacement are in the same direction.

What is reversible work?

1.7. The reversible work Wrev is defined as the maximum amount of useful work output or the minimum work input for a system undergoing a process between the specified initial and final states in a totally reversible manner. It represents the energy that was supposed to be converted to work potential, but was not.

Which work done is maximum isobaric?

The area under isobaric expansion is the maximum. Thus, the highest work done will be by the isobaric expansion. So, the ${w_3}$will hold the greatest value.

What is the work done in the reversible process?

The work done in the reversible process is maximum, due to the loss of very little heat to the surrounding. The reversible process which is infinitely slow will produce maximum work. It means that the energy released by the reversible process will do the maximum amount of work because the smaller amount of energy is lost in the form of heat.

Why does the reversible expansion do the maximum amount of work?

The reversible expansion does the maximum amount of work because the gas is pushing against the maximum possible external pressure. (Since the process remains at equilibrium throughout the reversible expansion, Pext = Pint.) If the external pressure was any higher, the process would reverse and the gas would be compressed.

Why do irreversible processes produce more work?

All real processes are irreversible. Reversible processes produce the maximum amount of work. If a process does work on the surroundings, you get more work out of the process if it is done slowly. This is because less heat is lost to the surroundings.

What happens if pressure is too high in a reversible process?

If the external pressure was any higher, the process would reverse and the gas would be compressed. In general, energy released by a reversible process can do the maximum amount of work because less of the energy is lost as heat.