## Credits

Created by Torsha_Paul
University of Calcutta (CU), Kolkata
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Verified by Soupayan banerjee
National University of Judicial Science (NUJS), Kolkata
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## Entropy of Activation Solution

STEP 0: Pre-Calculation Summary
Formula Used
Entropy of Activation = ([Molar-g]*ln(Pre-Exponential Factor))-[Molar-g]*ln([Molar-g]*Temperature)/[Avaga-no]*[hP]
ΔS* = ([Molar-g]*ln(A))-[Molar-g]*ln([Molar-g]*T)/[Avaga-no]*[hP]
This formula uses 3 Constants, 1 Functions, 2 Variables
Constants Used
[hP] - Planck constant Value Taken As 6.626070040E-34 Kilogram Meter² / Second
[Avaga-no] - Avogadro’s number Value Taken As 6.02214076E23
[Molar-g] - Molar gas constant Value Taken As 8.3145 Joule/Kelvin Mole
Functions Used
ln - Natural logarithm function (base e), ln(Number)
Variables Used
Pre-Exponential Factor - Pre-exponential factor is the pre-exponential constant in the Arrhenius equation, an empirical relationship between temperature and rate coefficient. (Measured in 1 per Second)
Temperature - Temperature is the degree or intensity of heat present in a substance or object. (Measured in Kelvin)
STEP 1: Convert Input(s) to Base Unit
Pre-Exponential Factor: 10 1 per Second --> 10 1 per Second No Conversion Required
Temperature: 85 Kelvin --> 85 Kelvin No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
ΔS* = ([Molar-g]*ln(A))-[Molar-g]*ln([Molar-g]*T)/[Avaga-no]*[hP] --> ([Molar-g]*ln(10))-[Molar-g]*ln([Molar-g]*85)/[Avaga-no]*[hP]
Evaluating ... ...
ΔS* = 19.144843755699
STEP 3: Convert Result to Output's Unit
19.144843755699 Joule Per Kelvin Per Mole --> No Conversion Required
19.144843755699 Joule Per Kelvin Per Mole <-- Entropy of Activation
(Calculation completed in 00.016 seconds)

## < 2 Transition State Theory Calculators

Entropy of Activation
Entropy of Activation = ([Molar-g]*ln(Pre-Exponential Factor))-[Molar-g]*ln([Molar-g]*Temperature)/[Avaga-no]*[hP] Go
Enthalpy of Activation Given Slope of line
Enthalpy of Activation = -(Slope of Line B/w Ln K and 1/T*2.303*[Molar-g]) Go

### Entropy of Activation Formula

Entropy of Activation = ([Molar-g]*ln(Pre-Exponential Factor))-[Molar-g]*ln([Molar-g]*Temperature)/[Avaga-no]*[hP]
ΔS* = ([Molar-g]*ln(A))-[Molar-g]*ln([Molar-g]*T)/[Avaga-no]*[hP]

## What is Transition State Theory ?

Transition state theory explains the reaction rates of elementary chemical reactions. The theory assumes a special type of chemical equilibrium (quasi-equilibrium) between reactants and activated transition state complexes.

## How to Calculate Entropy of Activation?

Entropy of Activation calculator uses Entropy of Activation = ([Molar-g]*ln(Pre-Exponential Factor))-[Molar-g]*ln([Molar-g]*Temperature)/[Avaga-no]*[hP] to calculate the Entropy of Activation, Entropy of activation is one of the two parameters which are typically obtained from the temperature dependence of reaction rate constant using Eyring equation of transition state theory. Entropy of Activation is denoted by ΔS* symbol.

How to calculate Entropy of Activation using this online calculator? To use this online calculator for Entropy of Activation, enter Pre-Exponential Factor (A) & Temperature (T) and hit the calculate button. Here is how the Entropy of Activation calculation can be explained with given input values -> 19.14484 = ([Molar-g]*ln(10))-[Molar-g]*ln([Molar-g]*85)/[Avaga-no]*[hP].

### FAQ

What is Entropy of Activation?
Entropy of activation is one of the two parameters which are typically obtained from the temperature dependence of reaction rate constant using Eyring equation of transition state theory and is represented as ΔS* = ([Molar-g]*ln(A))-[Molar-g]*ln([Molar-g]*T)/[Avaga-no]*[hP] or Entropy of Activation = ([Molar-g]*ln(Pre-Exponential Factor))-[Molar-g]*ln([Molar-g]*Temperature)/[Avaga-no]*[hP]. Pre-exponential factor is the pre-exponential constant in the Arrhenius equation, an empirical relationship between temperature and rate coefficient & Temperature is the degree or intensity of heat present in a substance or object.
How to calculate Entropy of Activation?
Entropy of activation is one of the two parameters which are typically obtained from the temperature dependence of reaction rate constant using Eyring equation of transition state theory is calculated using Entropy of Activation = ([Molar-g]*ln(Pre-Exponential Factor))-[Molar-g]*ln([Molar-g]*Temperature)/[Avaga-no]*[hP]. To calculate Entropy of Activation, you need Pre-Exponential Factor (A) & Temperature (T). With our tool, you need to enter the respective value for Pre-Exponential Factor & Temperature and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well. Let Others Know