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Equilibrium Constant is the value of its reaction quotient at chemical equilibrium. Check FAQs
Kc=10-(G2.303[R]T)
Kc - Equilibrium Constant?G - Gibbs Free Energy?T - Temperature?[R] - Universal gas constant?

Equilibrium constant given Gibbs free energy Example

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With units
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Here is how the Equilibrium constant given Gibbs free energy equation looks like with Values.

Here is how the Equilibrium constant given Gibbs free energy equation looks like with Units.

Here is how the Equilibrium constant given Gibbs free energy equation looks like.

0.0007Edit=10-(0.2286Edit2.3038.314585Edit)
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Equilibrium constant given Gibbs free energy Solution

Follow our step by step solution on how to calculate Equilibrium constant given Gibbs free energy?

FIRST Step Consider the formula
Kc=10-(G2.303[R]T)
Next Step Substitute values of Variables
Kc=10-(0.2286KJ2.303[R]85K)
Next Step Substitute values of Constants
Kc=10-(0.2286KJ2.3038.314585K)
Next Step Convert Units
Kc=10-(228.61J2.3038.314585K)
Next Step Prepare to Evaluate
Kc=10-(228.612.3038.314585)
Next Step Evaluate
Kc=0.723671470887063mol/m³
Next Step Convert to Output's Unit
Kc=0.000723671470887063mol/L
LAST Step Rounding Answer
Kc=0.0007mol/L

Equilibrium constant given Gibbs free energy Formula Elements

Variables
Constants
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.
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.
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

Other Formulas to find Equilibrium Constant

​Go Equilibrium Constant at Equilibrium given Gibbs Energy
Kc=exp(-(G[R]T))
​Go Equilibrium Constant at Equilibrium
Kc=10-ΔH+(ΔST)2.303[R]T

Other formulas in Thermodynamics in Chemical Equilibrium category

​Go Gibbs Free Energy given Equilibrium Constant
G=-2.303[R]Tlog10(Kc)
​Go Temperature of Reaction given Equilibrium Constant and Gibbs Energy
T=G-2.303[R]log10(Kc)
​Go Gibbs Free Energy given Equilibrium Constant due to Pressure
G=-2.303[R]Tln(Kp)
​Go Equilibrium Constant due to Pressure Given Gibbs Energy
Kp=exp(-(G2.303[R]T))

How to Evaluate Equilibrium constant given Gibbs free energy?

Equilibrium constant given Gibbs free energy evaluator uses Equilibrium Constant = 10^(-(Gibbs Free Energy/(2.303*[R]*Temperature))) to evaluate the Equilibrium Constant, The Equilibrium constant given Gibbs free energy formula is defined as the ratio of the product concentrations to reactant concentrations. Equilibrium Constant is denoted by Kc symbol.

How to evaluate Equilibrium constant given Gibbs free energy using this online evaluator? To use this online evaluator for Equilibrium constant given Gibbs free energy, enter Gibbs Free Energy (G) & Temperature (T) and hit the calculate button.

FAQs on Equilibrium constant given Gibbs free energy

What is the formula to find Equilibrium constant given Gibbs free energy?
The formula of Equilibrium constant given Gibbs free energy is expressed as Equilibrium Constant = 10^(-(Gibbs Free Energy/(2.303*[R]*Temperature))). Here is an example- 7.2E-7 = 10^(-(228.61/(2.303*[R]*85))).
How to calculate Equilibrium constant given Gibbs free energy?
With Gibbs Free Energy (G) & Temperature (T) we can find Equilibrium constant given Gibbs free energy using the formula - Equilibrium Constant = 10^(-(Gibbs Free Energy/(2.303*[R]*Temperature))). This formula also uses Universal gas constant .
What are the other ways to Calculate Equilibrium Constant?
Here are the different ways to Calculate Equilibrium Constant-
  • Equilibrium Constant=exp(-(Gibbs Free Energy/([R]*Temperature)))OpenImg
  • Equilibrium Constant=10^((-Change in Enthalpy+(Change in Entropy*Temperature))/(2.303*[R]*Temperature))OpenImg
Can the Equilibrium constant given Gibbs free energy be negative?
Yes, the Equilibrium constant given Gibbs free energy, measured in Molar Concentration can be negative.
Which unit is used to measure Equilibrium constant given Gibbs free energy?
Equilibrium constant given Gibbs free energy is usually measured using the Mole per Liter[mol/L] for Molar Concentration. Mole per Cubic Meter[mol/L], Mole per Cubic Millimeter[mol/L], Kilomole per Cubic Meter[mol/L] are the few other units in which Equilibrium constant given Gibbs free energy can be measured.
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