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Standard Entropy Change at Equilibrium Calculator

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✖Change in enthalpy is the thermodynamic quantity equivalent to the total difference between the heat content of a system.ⓘ Change in Enthalpy [ΔH]			+10% -10%
✖Temperature is the degree or intensity of heat present in a substance or object.ⓘ Temperature [T]			+10% -10%
✖Equilibrium Constant is the value of its reaction quotient at chemical equilibrium.ⓘ Equilibrium Constant [K_c]			+10% -10%

✖Change in entropy is the thermodynamic quantity equivalent to the total difference between the entropy of a system.ⓘ Standard Entropy Change at Equilibrium [ΔS]

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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(K_c)))/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(K_c)))/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 00.020 seconds)

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National Institute of Information Technology (NIIT), Neemrana

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< Thermodynamics in Chemical Equilibrium Calculators

Gibbs Free Energy given Equilibrium Constant due to Pressure

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

Temperature of Reaction given Equilibrium Constant and Gibbs Energy

LaTeX Go Temperature = Gibbs Free Energy/(-2.303*[R]*log10(Equilibrium Constant))

Gibbs Free Energy given Equilibrium Constant

LaTeX Go Gibbs Free Energy = -2.303*[R]*Temperature*log10(Equilibrium Constant)

Equilibrium constant given Gibbs free energy

LaTeX Go Equilibrium Constant = 10^(-(Gibbs Free Energy/(2.303*[R]*Temperature)))

Standard Entropy Change at Equilibrium Formula

LaTeX Go

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