Entropy using Helmholtz Free Energy, Internal Energy and Temperature Calculator

✖The internal energy of a thermodynamic system is the energy contained within it. It is the energy necessary to create or prepare the system in any given internal state.ⓘ Internal Energy [U]			+10% -10%
✖Helmholtz free energy is a thermodynamics concept in which, the thermodynamic potential is used to measure the work of a closed system.ⓘ Helmholtz Free Energy [A]			+10% -10%
✖Temperature is the degree or intensity of heat present in a substance or object.ⓘ Temperature [T]			+10% -10%

✖Entropy is the measure of a system’s thermal energy per unit temperature that is unavailable for doing useful work.ⓘ Entropy using Helmholtz Free Energy, Internal Energy and Temperature [S]

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Entropy using Helmholtz Free Energy, Internal Energy and Temperature

Formula

`"S" = ("U"-"A")/"T"`

Example

`"0.244444J/K"=("1.21KJ"-"1.1KJ")/"450K"`

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Entropy using Helmholtz Free Energy, Internal Energy and Temperature Solution

STEP 0: Pre-Calculation Summary

Formula Used

Entropy = (Internal Energy-Helmholtz Free Energy)/Temperature
S = (U-A)/T
This formula uses 4 Variables

Variables Used

Entropy - (Measured in Joule per Kelvin) - Entropy is the measure of a system’s thermal energy per unit temperature that is unavailable for doing useful work.
Internal Energy - (Measured in Joule) - The internal energy of a thermodynamic system is the energy contained within it. It is the energy necessary to create or prepare the system in any given internal state.
Helmholtz Free Energy - (Measured in Joule) - Helmholtz free energy is a thermodynamics concept in which, the thermodynamic potential is used to measure the work of a closed system.
Temperature - (Measured in Kelvin) - Temperature is the degree or intensity of heat present in a substance or object.

STEP 1: Convert Input(s) to Base Unit

Internal Energy: 1.21 Kilojoule --> 1210 Joule (Check conversion here)
Helmholtz Free Energy: 1.1 Kilojoule --> 1100 Joule (Check conversion here)
Temperature: 450 Kelvin --> 450 Kelvin No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

S = (U-A)/T --> (1210-1100)/450

Evaluating ... ...

S = 0.244444444444444

STEP 3: Convert Result to Output's Unit

0.244444444444444 Joule per Kelvin --> No Conversion Required

FINAL ANSWER

0.244444444444444 ≈ 0.244444 Joule per Kelvin <-- Entropy

(Calculation completed in 00.004 seconds)

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Home » Engineering » Chemical Engineering » Thermodynamics » Solution Thermodynamics » Thermodynamic Property Relations » Entropy using Helmholtz Free Energy, Internal Energy and Temperature

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Created by Shivam Sinha

National Institute Of Technology (NIT), Surathkal

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< 12 Thermodynamic Property Relations Calculators

Temperature using Gibbs Free Energy, Enthalpy and Entropy

Go Temperature = modulus((Enthalpy-Gibbs Free Energy)/Entropy)

Temperature using Helmholtz Free Energy, Internal Energy and Entropy

Go Temperature = (Internal Energy-Helmholtz Free Energy)/Entropy

Entropy using Helmholtz Free Energy, Internal Energy and Temperature

Go Entropy = (Internal Energy-Helmholtz Free Energy)/Temperature

Helmholtz Free Energy using Internal Energy, Temperature and Entropy

Go Helmholtz Free Energy = Internal Energy-Temperature*Entropy

Internal Energy using Helmholtz Free Energy, Temperature and Entropy

Go Internal Energy = Helmholtz Free Energy+Temperature*Entropy

Entropy using Gibbs Free Energy, Enthalpy and Temperature

Go Entropy = (Enthalpy-Gibbs Free Energy)/Temperature

Gibbs Free Energy using Enthalpy, Temperature and Entropy

Go Gibbs Free Energy = Enthalpy-Temperature*Entropy

Enthalpy using Gibbs Free Energy, Temperature and Entropy

Go Enthalpy = Gibbs Free Energy+Temperature*Entropy

Pressure using Enthalpy, Internal Energy and Volume

Go Pressure = (Enthalpy-Internal Energy)/Volume

Volume using Enthalpy, Internal Energy and Pressure

Go Volume = (Enthalpy-Internal Energy)/Pressure

Enthalpy using Internal Energy, Pressure and Volume

Go Enthalpy = Internal Energy+Pressure*Volume

Internal Energy using Enthalpy, Pressure and Volume

Go Internal Energy = Enthalpy-Pressure*Volume

Entropy using Helmholtz Free Energy, Internal Energy and Temperature Formula

Entropy = (Internal Energy-Helmholtz Free Energy)/Temperature
S = (U-A)/T

What is Helmholtz Free Energy?

In thermodynamics, the Helmholtz free energy is a thermodynamic potential that measures the useful work obtainable from a closed thermodynamic system at a constant temperature and volume (isothermal, isochoric). The negative of the change in the Helmholtz energy during a process is equal to the maximum amount of work that the system can perform in a thermodynamic process in which volume is held constant. If the volume were not held constant, part of this work would be performed as boundary work. This makes the Helmholtz energy useful for systems held at constant volume.

What is Duhem’s Theorem?

For any closed system formed from known amounts of prescribed chemical species, the equilibrium state is completely determined when any two independent variables are fixed. The two independent variables subject to specification may in general be either intensive or extensive. However, the number of independent intensive variables is given by the phase rule. Thus when F = 1, at least one of the two variables must be extensive, and when F = 0, both must be extensive.

How to Calculate Entropy using Helmholtz Free Energy, Internal Energy and Temperature?

Entropy using Helmholtz Free Energy, Internal Energy and Temperature calculator uses Entropy = (Internal Energy-Helmholtz Free Energy)/Temperature to calculate the Entropy, The Entropy using Helmholtz Free Energy, Internal Energy and Temperature formula is defined as the ratio of the difference of internal energy and Helmholtz energy to the temperature. Entropy is denoted by S symbol.

How to calculate Entropy using Helmholtz Free Energy, Internal Energy and Temperature using this online calculator? To use this online calculator for Entropy using Helmholtz Free Energy, Internal Energy and Temperature, enter Internal Energy (U), Helmholtz Free Energy (A) & Temperature (T) and hit the calculate button. Here is how the Entropy using Helmholtz Free Energy, Internal Energy and Temperature calculation can be explained with given input values -> 0.244444 = (1210-1100)/450.

FAQ

What is Entropy using Helmholtz Free Energy, Internal Energy and Temperature?

The Entropy using Helmholtz Free Energy, Internal Energy and Temperature formula is defined as the ratio of the difference of internal energy and Helmholtz energy to the temperature and is represented as S = (U-A)/T or Entropy = (Internal Energy-Helmholtz Free Energy)/Temperature. The internal energy of a thermodynamic system is the energy contained within it. It is the energy necessary to create or prepare the system in any given internal state, Helmholtz free energy is a thermodynamics concept in which, the thermodynamic potential is used to measure the work of a closed system & Temperature is the degree or intensity of heat present in a substance or object.

How to calculate Entropy using Helmholtz Free Energy, Internal Energy and Temperature?

The Entropy using Helmholtz Free Energy, Internal Energy and Temperature formula is defined as the ratio of the difference of internal energy and Helmholtz energy to the temperature is calculated using Entropy = (Internal Energy-Helmholtz Free Energy)/Temperature. To calculate Entropy using Helmholtz Free Energy, Internal Energy and Temperature, you need Internal Energy (U), Helmholtz Free Energy (A) & Temperature (T). With our tool, you need to enter the respective value for Internal Energy, Helmholtz Free Energy & Temperature and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Entropy?

In this formula, Entropy uses Internal Energy, Helmholtz Free Energy & Temperature. We can use 1 other way(s) to calculate the same, which is/are as follows -

Entropy = (Enthalpy-Gibbs Free Energy)/Temperature

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