## Why heat and work is a path function

Heat and work are forms of energy that are in motion. They exist only when there is a change in the state of system and surroundings. In other words, **they are non-existent before and after the change of state**. Therefore, the work done is a path function.

## Is EA a state function

**E is not a state function** because it depends on the path taken (i.e. what was reduced and what was oxidized). It is an intensive property because its value does not change depending on the amount of substance involved.

## Why is heat 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**.Jan 21, 2018

## Is heat a state variable

In thermodynamics, a state variable is an independent variable of a state function. Examples include internal energy, enthalpy, temperature, pressure, volume and entropy. **Heat and work are not state functions**, but process functions.

## What are examples of path functions

Examples of path functions include **work, heat and arc length**. In contrast to path functions, state functions are independent of the path taken. Thermodynamic state variables are point functions, differing from path functions.

## Is work and heat a property of the system justify

**Heat and work cannot be called the properties of a system** because their values depend on the path of the process and vary accordingly.

## Is QWA a state function

**Neither q nor w is a state function** but q+w is a state function.

## Which of the following is not a state function

**Work** is not state function because its value depends on path followed.

## Is Gibbs energy a state function

**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 heat a point function

Work (W), **heat (Q) are path functions**. Point Function: They depend on the state only, and not on how a system reaches that state. All properties are point functions.

## What is Path and state function

Difference Between State Function And Path Function

As defined earlier, **state functions are properties whose values do not depend on the path taken to reach that specific function or value**. All functions that depend on the path taken to reach that specific value are known as path functions.

## Why are Q and W not state functions

1 Answer. Solution:- **q and w both are path function**. q stands for heat which depend on the path or the chemical reaction w stands for work done which also depend on the path or the chemical reaction Now from first law of thermodynamics, ΔU=q+w Since ΔU is a state function, thus we can say that q+w is a state function.Sep 30, 2020

## How can you prove heat is path function

(For a process) dQ = dW, or dQ = dE + Dw; where dQ=Heat energy transferred, dW=work done, dE=energy loss(chnage in Kinetic Energy, Potential energy etc). thus Heat transfer follows a path and Hence a Path Function.

## How can the sum of heat and work be a state function

Explain how the sum of heat and work can be a state function, even though heat and work are themselves not state functions. a. According to the first law of thermodynamics, **the change in the internal energy of the system (ΔE) must be the sum of the heat transferred (q) and the workd done (w**): ΔE=q+w.

## Which of the following is a state function

**Internal energy, enthalpy, entropy, and density** are some examples of the state function.

## What is heat and work

Heat and work are **two different ways of transferring energy from one system to another**. The the distinction between Heat and Work is important in the field of thermodynamics. Heat is the transfer of thermal energy between systems, while work is the transfer of mechanical energy between two systems.Jul 21, 2018

## Is entropy is a state function

**Entropy is a state function** because it not only depends on the start and end states but also on the change in entropy between two states which is integrating infinitesimal change in entropy along a reversible path.

## Which of the following is path function * heat work both heat and work only heat

Explanation: **Heat and work**, both are path functions; Their magnitude depends on the path followed during a process as well as the end state. Work and heat are modes of energy transfer. Heat is energy transferred due to temperature differences only.