Work Done In Reversible Process

Work done in reversible process

Zero. Because, the heat absorbed and change in internal energy are zero. Was this answer helpful?

What is work done in irreversible process?

Irreversible work means that we can only bring the piston back to the starting state if we change the surrounding system. It does go back to the starting position, but it needs to take a new route, one where heat is given off into the environment.

Is work done in all reversible processes is equal?

4. Work done in all reversible processes is equal. Explanation: Reversible processes between the same end states must coincide and and produce equal amounts of work. Explanation: A reversible process gives the maximum work.

Why is work done in reversible process negative?

The reason why more work is done in a reversible process than an irreversible process is in an irreversible process entropy is generated within the gas whereas in a reversible process entropy is not generated.

Is reversible work less than irreversible work?

The reversible work greater than irreversible work beacuse 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.

In which process there is no work done?

An isochoric process is one in which the volume is held constant (V=constant), meaning that the work done by the system will be zero.

What is work done in reversible isothermal process?

Isothermal reversible change: q = -w = nRTln (Vf/Vi) = 2.303 nRT log (Vf/Vi)

How does reversible work differ from useful work?

Reversible work is defined as the maximum amount of useful work can be obtained as a system undergoes a process between the specific initial and final states. This is the useful work (output or input) obtained when the process between the initial and final states is executed in a totally reversible manner.

How do you calculate work done in irreversible expansion?

Work done on the gas, w, in an irreversible expansion is given by w=−Pext×dV, where Pext is the external pressure and dV is the change in volume of the gas (i.e., Vfloat−Vinitial).

Do irreversible processes require more work?

Note: A reversible expansion will always require more work than an irreversible expansion (such as an expansion against a constant external pressure) when the final states of the two expansions are the same!

Is work done by non conservative force reversible?

Properties of Non-Conservative Forces In any closed path, the total work done by a non-conservative force is not zero. The work done by a non-conservative is irreversible.

What does reversible work mean?

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.

Which work done is maximum reversible or irreversible?

Hence, the conditions for a reversible process prove that the work done in this process is maximum.

What is the difference between reversible and irreversible processes?

Difference between reversible Process & irreversible process A reversible process is a process that can be obtained into the initial state of the system whereas, an Irreversible process is a thermodynamic process that cannot be reversed to obtain the initial state of a system.

Why work done is more in reversible process?

The endlessly slow reversible process will produce the most work. Because a lower amount of energy is wasted in the form of heat, the energy produced by the reversible process will do the most amount of work.

Why do reversible processes do more work?

Reversible processes produce the maximum amount of work This is because less heat is lost to the surroundings. So a reversible process (infinitely slow) does the maximum work. There is one example of this that is easy to understand: the work done by a gas expanding inside a piston.

Can there be work done without displacement?

No, it is not possible. Force and displacement are necessary for doing work.

What are three examples where work is not done?

No work is done inspite of working hard when:

• There is no displacement of object. Example: A boy pushing a wall.
• Displacement is perpendicular to the object. Example: Uniform circular motion.

In which situation the work done is zero?

Zero work is done when the displacement of a body is zero or perpendicular (θ=900,cosθ=0) to the direction of force applied, then work done is zero.

How much work is done by isothermal and reversible compression?

Reversible isothermal compression w = -nRT ln(V2/V1) = -(0.030 Latm) ln(0.010L/0.030L) = 0.033 Latm. which is true in general.

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