Entropy using Gibbs Free Energy, Enthalpy and Temperature Calculator

✖Enthalpy is the thermodynamic quantity equivalent to the total heat content of a system.ⓘ Enthalpy [H]			+10% -10%
✖Gibbs Free Energy is a thermodynamic potential that can be used to calculate the maximum of reversible work that may be performed by a thermodynamic system at a constant temperature and pressure.ⓘ Gibbs Free Energy [G]			+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 Gibbs Free Energy, Enthalpy and Temperature [S]

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Entropy using Gibbs Free Energy, Enthalpy and Temperature Solution

STEP 0: Pre-Calculation Summary

Formula Used

Entropy = (Enthalpy-Gibbs Free Energy)/Temperature
S = (H-G)/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.
Enthalpy - (Measured in Joule) - Enthalpy is the thermodynamic quantity equivalent to the total heat content of a system.
Gibbs Free Energy - (Measured in Joule) - Gibbs Free Energy is a thermodynamic potential that can be used to calculate the maximum of reversible work that may be performed by a thermodynamic system at a constant temperature and pressure.
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

Enthalpy: 1.51 Kilojoule --> 1510 Joule (Check conversion here)
Gibbs Free Energy: 0.22861 Kilojoule --> 228.61 Joule (Check conversion here)
Temperature: 450 Kelvin --> 450 Kelvin No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

S = (H-G)/T --> (1510-228.61)/450

Evaluating ... ...

S = 2.84753333333333

STEP 3: Convert Result to Output's Unit

2.84753333333333 Joule per Kelvin --> No Conversion Required

FINAL ANSWER

2.84753333333333 ≈ 2.847533 Joule per Kelvin <-- Entropy

(Calculation completed in 00.020 seconds)

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National Institute Of Technology (NIT), Surathkal

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Entropy using Gibbs Free Energy, Enthalpy and Temperature Formula

LaTeX Go

Entropy = (Enthalpy-Gibbs Free Energy)/Temperature
S = (H-G)/T

What is Gibbs Free Energy?

The Gibbs free energy (or Gibbs energy) is a thermodynamic potential that can be used to calculate the maximum reversible work that may be performed by a thermodynamic system at a constant temperature and pressure. The Gibbs free energy measured in joules in SI) is the maximum amount of non-expansion work that can be extracted from a thermodynamically closed system (can exchange heat and work with its surroundings, but not matter). This maximum can be attained only in a completely reversible process. When a system transforms reversibly from an initial state to a final state, the decrease in Gibbs free energy equals the work done by the system to its surroundings, minus the work of the pressure forces.

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 Gibbs Free Energy, Enthalpy and Temperature?

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

How to calculate Entropy using Gibbs Free Energy, Enthalpy and Temperature using this online calculator? To use this online calculator for Entropy using Gibbs Free Energy, Enthalpy and Temperature, enter Enthalpy (H), Gibbs Free Energy (G) & Temperature (T) and hit the calculate button. Here is how the Entropy using Gibbs Free Energy, Enthalpy and Temperature calculation can be explained with given input values -> 2.847533 = (1510-228.61)/450.

FAQ

What is Entropy using Gibbs Free Energy, Enthalpy and Temperature?

The Entropy using Gibbs Free Energy, Enthalpy and Temperature formula is defined as the ratio of the difference of enthalpy and Gibbs energy to the temperature and is represented as S = (H-G)/T or Entropy = (Enthalpy-Gibbs Free Energy)/Temperature. Enthalpy is the thermodynamic quantity equivalent to the total heat content of a system, Gibbs Free Energy is a thermodynamic potential that can be used to calculate the maximum of reversible work that may be performed by a thermodynamic system at a constant temperature and pressure & Temperature is the degree or intensity of heat present in a substance or object.

How to calculate Entropy using Gibbs Free Energy, Enthalpy and Temperature?

The Entropy using Gibbs Free Energy, Enthalpy and Temperature formula is defined as the ratio of the difference of enthalpy and Gibbs energy to the temperature is calculated using Entropy = (Enthalpy-Gibbs Free Energy)/Temperature. To calculate Entropy using Gibbs Free Energy, Enthalpy and Temperature, you need Enthalpy (H), Gibbs Free Energy (G) & Temperature (T). With our tool, you need to enter the respective value for Enthalpy, Gibbs 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 Enthalpy, Gibbs Free Energy & Temperature. We can use 1 other way(s) to calculate the same, which is/are as follows -

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

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