Standard Entropy Change at Equilibrium Solution

STEP 0: Pre-Calculation Summary
Formula Used
Change in Entropy = (Change in Enthalpy+(2.303*[R]*Temperature*log10(Equilibrium Constant)))/Temperature
ΔS = (ΔH+(2.303*[R]*T*log10(Kc)))/T
This formula uses 1 Constants, 1 Functions, 4 Variables
Constants Used
[R] - Universal gas constant Value Taken As 8.31446261815324
Functions Used
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., log10(Number)
Variables Used
Change in Entropy - (Measured in Joule per Kilogram K) - Change in entropy is the thermodynamic quantity equivalent to the total difference between the entropy of a system.
Change in Enthalpy - (Measured in Joule per Kilogram) - Change in enthalpy is the thermodynamic quantity equivalent to the total difference between the heat content of a system.
Temperature - (Measured in Kelvin) - Temperature is the degree or intensity of heat present in a substance or object.
Equilibrium Constant - (Measured in Mole per Cubic Meter) - Equilibrium Constant is the value of its reaction quotient at chemical equilibrium.
STEP 1: Convert Input(s) to Base Unit
Change in Enthalpy: 190 Joule per Kilogram --> 190 Joule per Kilogram No Conversion Required
Temperature: 85 Kelvin --> 85 Kelvin No Conversion Required
Equilibrium Constant: 60 Mole per Liter --> 60000 Mole per Cubic Meter (Check conversion here)
STEP 2: Evaluate Formula
Substituting Input Values in Formula
ΔS = (ΔH+(2.303*[R]*T*log10(Kc)))/T --> (190+(2.303*[R]*85*log10(60000)))/85
Evaluating ... ...
ΔS = 93.7283252944657
STEP 3: Convert Result to Output's Unit
93.7283252944657 Joule per Kilogram K --> No Conversion Required
FINAL ANSWER
93.7283252944657 93.72833 Joule per Kilogram K <-- Change in Entropy
(Calculation completed in 00.004 seconds)

Credits

Created by Akshada Kulkarni
National Institute of Information Technology (NIIT), Neemrana
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25 Thermodynamics in Chemical Equilibrium Calculators

Equilibrium Constant 2 in Temperature Range T1 and T2
Go Equilibrium constant 2 = Equilibrium constant 1*exp((Change in Enthalpy/[R])*((Final Temperature at Equilibrium-Initial Temperature at Equilibrium)/(Initial Temperature at Equilibrium*Final Temperature at Equilibrium)))
Equilibrium Constant 1 in Temperature Range T1 and T2
Go Equilibrium constant 1 = Equilibrium constant 2/exp((Change in Enthalpy/[R])*((Final Temperature at Equilibrium-Initial Temperature at Equilibrium)/(Initial Temperature at Equilibrium*Final Temperature at Equilibrium)))
Standard Enthalpy at Initial Temperature T1
Go Change in Enthalpy = (2.303*[R]*Initial Temperature at Equilibrium)*((Change in Entropy/(2.303*[R]))-log10(Equilibrium constant 1))
Standard Enthalpy at Final Temperature T2
Go Change in Enthalpy = (2.303*[R]*Final Temperature at Equilibrium)*((Change in Entropy/(2.303*[R]))-log10(Equilibrium constant 2))
Standard Entropy Change at Final Temperature T2
Go Change in Entropy = (2.303*[R])*(Change in Enthalpy/(2.303*[R]*Final Temperature at Equilibrium)+log10(Equilibrium constant 2))
Standard Enthalpy of Reaction at Equilibrium
Go Change in Enthalpy = (Temperature*Change in Entropy)-(2.303*[R]*Temperature*log10(Equilibrium Constant))
Standard Entropy Change at Equilibrium
Go Change in Entropy = (Change in Enthalpy+(2.303*[R]*Temperature*log10(Equilibrium Constant)))/Temperature
Equilibrium Constant at Initial Temperature T1
Go Equilibrium constant 1 = 10^((-Change in Enthalpy/(2.303*[R]*Initial Temperature at Equilibrium))+(Change in Entropy/(2.303*[R])))
Equilibrium Constant at Final Temperature T2
Go Equilibrium constant 2 = 10^((-Change in Enthalpy/(2.303*[R]*Final Temperature at Equilibrium))+Change in Entropy/(2.303*[R]))
Standard Entropy Change at Initial Temperature T1
Go Change in Entropy = (2.303*[R]*log10(Equilibrium constant 1))+(Change in Enthalpy/Initial Temperature at Equilibrium)
Equilibrium Constant at Equilibrium
Go Equilibrium Constant = 10^((-Change in Enthalpy+(Change in Entropy*Temperature))/(2.303*[R]*Temperature))
Equilibrium Constant due to Pressure Given Gibbs Energy
Go Equilibrium Constant for Partial Pressure = exp(-(Gibbs Free Energy/(2.303*[R]*Temperature)))
Temperature of Reaction given Equilibrium Constant of Pressure and Gibbs Energy
Go Temperature = Gibbs Free Energy/(-2.303*[R]*ln(Equilibrium Constant for Partial Pressure))
Gibbs Free Energy given Equilibrium Constant due to Pressure
Go Gibbs Free Energy = -2.303*[R]*Temperature*ln(Equilibrium Constant for Partial Pressure)
Temperature of Reaction given Equilibrium Constant and Gibbs Energy
Go Temperature = Gibbs Free Energy/(-2.303*[R]*log10(Equilibrium Constant))
Gibbs Free Energy given Equilibrium Constant
Go Gibbs Free Energy = -2.303*[R]*Temperature*log10(Equilibrium Constant)
Equilibrium Constant at Equilibrium given Gibbs Energy
Go Equilibrium Constant = exp(-(Gibbs Free Energy/([R]*Temperature)))
Equilibrium constant given Gibbs free energy
Go Equilibrium Constant = 10^(-(Gibbs Free Energy/(2.303*[R]*Temperature)))
Temperature of Reaction given Standard Enthalpy and Entropy Change
Go Temperature = (Change in Enthalpy-Gibbs Free Energy)/Change in Entropy
Standard Enthalpy of Reaction given Gibbs Free Energy
Go Change in Enthalpy = Gibbs Free Energy+(Temperature*Change in Entropy)
Standard Entropy Change given Gibbs Free Energy
Go Change in Entropy = (Change in Enthalpy-Gibbs Free Energy)/Temperature
Gibbs Free Energy given Standard Enthalpy
Go Gibbs Free Energy = Change in Enthalpy-(Temperature*Change in Entropy)
Gibbs Energy of Reactants
Go Gibbs Free Energy Reactants = Gibbs Free Energy Products-Gibbs Free Energy Reaction
Gibbs Energy of Reaction
Go Gibbs Free Energy Reaction = Gibbs Free Energy Products-Gibbs Free Energy Reactants
Gibbs Energy of Products
Go Gibbs Free Energy Products = Gibbs Free Energy Reaction+Gibbs Free Energy Reactants

Standard Entropy Change at Equilibrium Formula

Change in Entropy = (Change in Enthalpy+(2.303*[R]*Temperature*log10(Equilibrium Constant)))/Temperature
ΔS = (ΔH+(2.303*[R]*T*log10(Kc)))/T

What is Gibbs free energy?

In thermodynamics, the Gibbs free 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. This maximum can be attained only in a completely reversible process.

How equilibrium constant with respect to the Gibbs free energy?

1. When ΔG0 = 0, then, Kc = 1

2. When, ΔG0 > 0, i.e. positive, then Kc < 1, in this case reverse reaction is feasible showing thereby a less concentration of products at equilibrium rate.

3. When ΔG0 < 0, i.e. negative, then, Kc > 1; In this case, forward reaction is feasible showing thereby a large concentrations of product at equilibrium state.

How to Calculate Standard Entropy Change at Equilibrium?

Standard Entropy Change at Equilibrium calculator uses Change in Entropy = (Change in Enthalpy+(2.303*[R]*Temperature*log10(Equilibrium Constant)))/Temperature to calculate the Change in Entropy, The Standard entropy change at equilibrium formula is defined as the thermodynamic quantity equivalent to the total difference between the entropy of a system. Change in Entropy is denoted by ΔS symbol.

How to calculate Standard Entropy Change at Equilibrium using this online calculator? To use this online calculator for Standard Entropy Change at Equilibrium, enter Change in Enthalpy (ΔH), Temperature (T) & Equilibrium Constant (Kc) and hit the calculate button. Here is how the Standard Entropy Change at Equilibrium calculation can be explained with given input values -> 93.72833 = (190+(2.303*[R]*85*log10(60000)))/85.

FAQ

What is Standard Entropy Change at Equilibrium?
The Standard entropy change at equilibrium formula is defined as the thermodynamic quantity equivalent to the total difference between the entropy of a system and is represented as ΔS = (ΔH+(2.303*[R]*T*log10(Kc)))/T or Change in Entropy = (Change in Enthalpy+(2.303*[R]*Temperature*log10(Equilibrium Constant)))/Temperature. Change in enthalpy is the thermodynamic quantity equivalent to the total difference between the heat content of a system, Temperature is the degree or intensity of heat present in a substance or object & Equilibrium Constant is the value of its reaction quotient at chemical equilibrium.
How to calculate Standard Entropy Change at Equilibrium?
The Standard entropy change at equilibrium formula is defined as the thermodynamic quantity equivalent to the total difference between the entropy of a system is calculated using Change in Entropy = (Change in Enthalpy+(2.303*[R]*Temperature*log10(Equilibrium Constant)))/Temperature. To calculate Standard Entropy Change at Equilibrium, you need Change in Enthalpy (ΔH), Temperature (T) & Equilibrium Constant (Kc). With our tool, you need to enter the respective value for Change in Enthalpy, Temperature & Equilibrium Constant 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 Change in Entropy?
In this formula, Change in Entropy uses Change in Enthalpy, Temperature & Equilibrium Constant. We can use 3 other way(s) to calculate the same, which is/are as follows -
  • Change in Entropy = (Change in Enthalpy-Gibbs Free Energy)/Temperature
  • Change in Entropy = (2.303*[R]*log10(Equilibrium constant 1))+(Change in Enthalpy/Initial Temperature at Equilibrium)
  • Change in Entropy = (2.303*[R])*(Change in Enthalpy/(2.303*[R]*Final Temperature at Equilibrium)+log10(Equilibrium constant 2))
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