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Gibbs Free Energy given Standard Enthalpy Formula

GoGibbs Free Energy given Equilibrium Constant Formula

GoGibbs Free Energy given Equilibrium Constant due to Pressure Formula

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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. Check FAQs

G = ΔH - (T \cdot ΔS)

G - Gibbs Free Energy?ΔH - Change in Enthalpy?T - Temperature?ΔS - Change in Entropy?

Gibbs Free Energy given Standard Enthalpy Example

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Here is how the Gibbs Free Energy given Standard Enthalpy equation looks like with Values.

Here is how the Gibbs Free Energy given Standard Enthalpy equation looks like with Units.

Here is how the Gibbs Free Energy given Standard Enthalpy equation looks like.

-18.51 = 190 - (85 \cdot 220)

-18.51KJ = 190J/kg - (85K \cdot 220J/kg*K)

-18.51 = 190 - (85 \cdot 220)

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Gibbs Free Energy given Standard Enthalpy Solution

Follow our step by step solution on how to calculate Gibbs Free Energy given Standard Enthalpy?

FIRST Step Consider the formula

G = ΔH - (T \cdot ΔS)

Next Step Substitute values of Variables

∴

G = 190J/kg - (85K \cdot 220J/kg*K)

Next Step Prepare to Evaluate

∴

G = 190 - (85 \cdot 220)

Next Step Evaluate

∴

G = -18510J

LAST Step Convert to Output's Unit

∴

G = -18.51KJ

Gibbs Free Energy given Standard Enthalpy Formula Elements

Variables

Gibbs Free Energy

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.

Symbol: G

Measurement: EnergyUnit: KJ

Note: Value can be positive or negative.

Formulas to find Gibbs Free Energy

Change in Enthalpy

Change in enthalpy is the thermodynamic quantity equivalent to the total difference between the heat content of a system.

Symbol: ΔH

Measurement: Heat of Combustion (per Mass)Unit: J/kg

Note: Value can be positive or negative.

Formulas to find Change in Enthalpy

Temperature

Temperature is the degree or intensity of heat present in a substance or object.

Symbol: T

Measurement: TemperatureUnit: K

Note: Value can be positive or negative.

Formulas to find Temperature

Change in Entropy

Change in entropy is the thermodynamic quantity equivalent to the total difference between the entropy of a system.

Symbol: ΔS

Measurement: Specific EntropyUnit: J/kg*K

Note: Value can be positive or negative.

Formulas to find Change in Entropy

Other Formulas to find Gibbs Free Energy

Go Gibbs Free Energy given Equilibrium Constant

G = - 2.303 \cdot [R] \cdot T \cdot \log 10 (K c)

Go Gibbs Free Energy given Equilibrium Constant due to Pressure

G = - 2.303 \cdot [R] \cdot T \cdot \ln (K p)

Other formulas in Thermodynamics in Chemical Equilibrium category

Go Equilibrium constant given Gibbs free energy

K c = 10^{- (\frac{G}{2.303 \cdot [R] \cdot T})}

Go Temperature of Reaction given Equilibrium Constant and Gibbs Energy

T = \frac{G}{- 2.303 \cdot [R] \cdot \log 10 (K c)}

Go Equilibrium Constant due to Pressure Given Gibbs Energy

K p = \exp (- (\frac{G}{2.303 \cdot [R] \cdot T}))

Go Temperature of Reaction given Equilibrium Constant of Pressure and Gibbs Energy

T = \frac{G}{- 2.303 \cdot [R] \cdot \ln (K p)}

How to Evaluate Gibbs Free Energy given Standard Enthalpy?

Gibbs Free Energy given Standard Enthalpy evaluator uses Gibbs Free Energy = Change in Enthalpy-(Temperature*Change in Entropy) to evaluate the Gibbs Free Energy, The Gibbs free energy given standard enthalpy formula is defined as the difference in free energy of the reaction when all the reactants and products are in the standard state and Kc or, Kp be the thermodynamic equilibrium constant of the reaction. Gibbs Free Energy is denoted by G symbol.

How to evaluate Gibbs Free Energy given Standard Enthalpy using this online evaluator? To use this online evaluator for Gibbs Free Energy given Standard Enthalpy, enter Change in Enthalpy (ΔH), Temperature (T) & Change in Entropy (ΔS) and hit the calculate button.

FAQs on Gibbs Free Energy given Standard Enthalpy

What is the formula to find Gibbs Free Energy given Standard Enthalpy?

The formula of Gibbs Free Energy given Standard Enthalpy is expressed as Gibbs Free Energy = Change in Enthalpy-(Temperature*Change in Entropy). Here is an example- -0.01851 = 190-(85*220).

How to calculate Gibbs Free Energy given Standard Enthalpy?

With Change in Enthalpy (ΔH), Temperature (T) & Change in Entropy (ΔS) we can find Gibbs Free Energy given Standard Enthalpy using the formula - Gibbs Free Energy = Change in Enthalpy-(Temperature*Change in Entropy).

What are the other ways to Calculate Gibbs Free Energy?

Here are the different ways to Calculate Gibbs Free Energy-

Gibbs Free Energy=-2.303*[R]*Temperature*log10(Equilibrium Constant)
Gibbs Free Energy=-2.303*[R]*Temperature*ln(Equilibrium Constant for Partial Pressure)

Can the Gibbs Free Energy given Standard Enthalpy be negative?

Yes, the Gibbs Free Energy given Standard Enthalpy, measured in Energy can be negative.

Which unit is used to measure Gibbs Free Energy given Standard Enthalpy?

Gibbs Free Energy given Standard Enthalpy is usually measured using the Kilojoule[KJ] for Energy. Joule[KJ], Gigajoule[KJ], Megajoule[KJ] are the few other units in which Gibbs Free Energy given Standard Enthalpy can be measured.

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Gibbs Free Energy given Standard Enthalpy Formula

​GoGibbs Free Energy given Equilibrium Constant Formula

​GoGibbs Free Energy given Equilibrium Constant due to Pressure Formula

Gibbs Free Energy given Standard Enthalpy Example

Gibbs Free Energy given Standard Enthalpy Solution

Gibbs Free Energy given Standard Enthalpy Formula Elements

Other Formulas to find Gibbs Free Energy

Other formulas in Thermodynamics in Chemical Equilibrium category

How to Evaluate Gibbs Free Energy given Standard Enthalpy?

FAQs on Gibbs Free Energy given Standard Enthalpy

Variable Name

GoGibbs Free Energy given Equilibrium Constant Formula

GoGibbs Free Energy given Equilibrium Constant due to Pressure Formula