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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=-2.303[R]Tlog10(Kc)
G - Gibbs Free Energy?T - Temperature?Kc - Equilibrium Constant?[R] - Universal gas constant?

Gibbs Free Energy given Equilibrium Constant Example

With values
With units
Only example

Here is how the Gibbs Free Energy given Equilibrium Constant equation looks like with Values.

Here is how the Gibbs Free Energy given Equilibrium Constant equation looks like with Units.

Here is how the Gibbs Free Energy given Equilibrium Constant equation looks like.

-7.7769Edit=-2.3038.314585Editlog10(60Edit)
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Gibbs Free Energy given Equilibrium Constant Solution

Follow our step by step solution on how to calculate Gibbs Free Energy given Equilibrium Constant?

FIRST Step Consider the formula
G=-2.303[R]Tlog10(Kc)
Next Step Substitute values of Variables
G=-2.303[R]85Klog10(60mol/L)
Next Step Substitute values of Constants
G=-2.3038.314585Klog10(60mol/L)
Next Step Convert Units
G=-2.3038.314585Klog10(60000mol/m³)
Next Step Prepare to Evaluate
G=-2.3038.314585log10(60000)
Next Step Evaluate
G=-7776.90765002958J
Next Step Convert to Output's Unit
G=-7.77690765002958KJ
LAST Step Rounding Answer
G=-7.7769KJ

Gibbs Free Energy given Equilibrium Constant Formula Elements

Variables
Constants
Functions
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.
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.
Equilibrium Constant
Equilibrium Constant is the value of its reaction quotient at chemical equilibrium.
Symbol: Kc
Measurement: Molar ConcentrationUnit: mol/L
Note: Value can be positive or negative.
Universal gas constant
Universal gas constant is a fundamental physical constant that appears in the ideal gas law, relating the pressure, volume, and temperature of an ideal gas.
Symbol: [R]
Value: 8.31446261815324
log10
The common logarithm, also known as the base-10 logarithm or the decimal logarithm, is a mathematical function that is the inverse of the exponential function.
Syntax: log10(Number)

Other Formulas to find Gibbs Free Energy

​Go Gibbs Free Energy given Equilibrium Constant due to Pressure
G=-2.303[R]Tln(Kp)
​Go Gibbs Free Energy given Standard Enthalpy
G=ΔH-(TΔS)

Other formulas in Thermodynamics in Chemical Equilibrium category

​Go Equilibrium constant given Gibbs free energy
Kc=10-(G2.303[R]T)
​Go Temperature of Reaction given Equilibrium Constant and Gibbs Energy
T=G-2.303[R]log10(Kc)
​Go Equilibrium Constant due to Pressure Given Gibbs Energy
Kp=exp(-(G2.303[R]T))
​Go Temperature of Reaction given Equilibrium Constant of Pressure and Gibbs Energy
T=G-2.303[R]ln(Kp)

How to Evaluate Gibbs Free Energy given Equilibrium Constant?

Gibbs Free Energy given Equilibrium Constant evaluator uses Gibbs Free Energy = -2.303*[R]*Temperature*log10(Equilibrium Constant) to evaluate the Gibbs Free Energy, The Gibbs free energy given equilibrium constant 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 Equilibrium Constant using this online evaluator? To use this online evaluator for Gibbs Free Energy given Equilibrium Constant, enter Temperature (T) & Equilibrium Constant (Kc) and hit the calculate button.

FAQs on Gibbs Free Energy given Equilibrium Constant

What is the formula to find Gibbs Free Energy given Equilibrium Constant?
The formula of Gibbs Free Energy given Equilibrium Constant is expressed as Gibbs Free Energy = -2.303*[R]*Temperature*log10(Equilibrium Constant). Here is an example- -0.007777 = -2.303*[R]*85*log10(60000).
How to calculate Gibbs Free Energy given Equilibrium Constant?
With Temperature (T) & Equilibrium Constant (Kc) we can find Gibbs Free Energy given Equilibrium Constant using the formula - Gibbs Free Energy = -2.303*[R]*Temperature*log10(Equilibrium Constant). This formula also uses Universal gas constant and Common Logarithm (log10) function(s).
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*ln(Equilibrium Constant for Partial Pressure)OpenImg
  • Gibbs Free Energy=Change in Enthalpy-(Temperature*Change in Entropy)OpenImg
Can the Gibbs Free Energy given Equilibrium Constant be negative?
Yes, the Gibbs Free Energy given Equilibrium Constant, measured in Energy can be negative.
Which unit is used to measure Gibbs Free Energy given Equilibrium Constant?
Gibbs Free Energy given Equilibrium Constant 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 Equilibrium Constant can be measured.
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