Quick Answer: Does Work Depend On Path?

What does the amount of work done depend on?

The work is proportional to the product of the force acting on the object, and it’s displacement in the direction of that force.

This means that if you are applying the same force over the same distance, it takes the same amount of work, regardless of the velocity..

Is QA a path function?

Yes, indeed, different paths can result in different amounts of heat transfer – the first law of thermodynamics states: δE=Q+W, wherein Q is the amount of heat flow into the system, W is the work done onto the system, and δE is the total state internal energy change of the system.

Is Gibbs free energy a path function?

Gibbs free energy (G) is a state function since it depends on enthalpy (H), absolute temperature (T) and entropy (S), all of which are state…

Why work is not a property?

Work is not a property of a system. Work is a process done by or on a system, but a system contains no work. This distinction between the forms of energy that are properties of a system and the forms of energy that are transferred to and from a system is important to the understanding of energy transfer systems.

Does the work done depend on how fast an object is raised?

No, the work done does not depend on how fast an object is raised up. For the constant value of m and g, the work depends on height upto which it is raised. Power is the physical quantity which is defined as the rate of doing work i.e. and, t=time taken.

Does work depend on distance or displacement?

Displacement versus Distance Often times we will be asked to calculate the work done by a force on an object. As we have shown, this is proportional to the force and the distance which the object is displaced, not moved. We will investigate two examples of a box being moved to illustrate this.

What factors does the kinetic energy of a body depend on?

The kinetic energy of a body or object depends upon its velocity and mass.

Which of the following is a path function?

Path functions are properties or quantities whose values depends on the transaction of a system from the initial state to the final state. The two most common path functions are heat and work.

Why is Gibbs energy useful?

The Gibbs free energy is one of the most important thermodynamic functions for the characterization of a system. It is a factor in determining outcomes such as the voltage of an electrochemical cell, and the equilibrium constant for a reversible reaction.

Why is Gibbs free energy a state function?

The Gibbs free energy of a system at any moment in time is defined as the enthalpy of the system minus the product of the temperature times the entropy of the system. The Gibbs free energy of the system is a state function because it is defined in terms of thermodynamic properties that are state functions.

Is work a path or state function?

Heat and work are not state functions. Work can’t be a state function because it is proportional to the distance an object is moved, which depends on the path used to go from the initial to the final state. … Thermodynamic properties that are not state functions are often described by lowercase letters (q and w).

Is energy a path function?

The thermodynamic state of a system refers to the temperature, pressure and quantity of substance present. State functions only depend on these parameters and not on how they were reached. Examples of state functions include density, internal energy, enthalpy, entropy. … Two examples of path functions are heat and work.

Which one is not a state function?

Heat and work are not state functions. Work can’t be a state function because it is proportional to the distance an object is moved, which depends on the path used to go from the initial to the final state.

Why work is a path function?

Two important examples of a path function are heat and work. These two functions are dependent on how the thermodynamic system changes from the initial state to final state. These two functions are introduced by the equation ΔU which represents the change in the internal energy of a system.

Why Heat is not a state function?

A state function is independent of pathways taken to get to a specific value, such as energy, temperature, enthalpy, and entropy. Enthalpy is the amount of heat released or absorbed at a constant pressure. Heat is not a state function because it is only to transfer energy in or out of a system; it depends on pathways.

Is entropy a path function?

Since entropy is a state function, the entropy change of the system for an irreversible path is the same as for a reversible path between the same two states. … In classical thermodynamics, the entropy of a system is defined only if it is in thermodynamic equilibrium.

Why Gibbs energy is called free energy?

4 Answers. Free Energy refers to the energy in a system that is free to do work i.e. the internal energy minus any energy that is unavailable to perform work. … It’s normally called the Gibbs energy more recently, though at my Uni it’s often been refered to as the ‘Gibbs Free Energy’.

How can energy be consumed when no work is done?

This energy comes from the chemical energy in your body and most of them are converted into heat and lost to the surrounding. In this situation, no energy is transferred to the book, so no work is done. You can feel the different energy consumption when your arm is stretched in different angle.