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Activation Energy for Backward Reaction Calculator

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✖Activation Energy Forward is the minimum amount of energy that is required to activate atoms or molecules to a condition in which they can undergo a chemical transformation in a forward reaction.ⓘ Activation Energy Forward [E_af]			+10% -10%
✖The Enthalpy of Reaction is the difference in enthalpy between products and reactants.ⓘ Enthalpy of Reaction [ΔH]			+10% -10%

✖Activation Energy Backward is the minimum amount of energy that is required to activate atoms or molecules to a condition in which they can undergo a chemical transformation for a backward reaction.ⓘ Activation Energy for Backward Reaction [E_ab]

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Activation Energy for Backward Reaction Solution

STEP 0: Pre-Calculation Summary

Formula Used

Activation Energy Backward = Activation Energy Forward-Enthalpy of Reaction
E_ab = E_af-ΔH
This formula uses 3 Variables

Variables Used

Activation Energy Backward - (Measured in Joule) - Activation Energy Backward is the minimum amount of energy that is required to activate atoms or molecules to a condition in which they can undergo a chemical transformation for a backward reaction.
Activation Energy Forward - (Measured in Joule) - Activation Energy Forward is the minimum amount of energy that is required to activate atoms or molecules to a condition in which they can undergo a chemical transformation in a forward reaction.
Enthalpy of Reaction - (Measured in Joule Per Mole) - The Enthalpy of Reaction is the difference in enthalpy between products and reactants.

STEP 1: Convert Input(s) to Base Unit

Activation Energy Forward: 150 Electron-Volt --> 2.40326599500001E-17 Joule (Check conversion here)
Enthalpy of Reaction: 300 KiloJoule Per Mole --> 300000 Joule Per Mole (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

E_ab = E_af-ΔH --> 2.40326599500001E-17-300000

Evaluating ... ...

E_ab = -300000

STEP 3: Convert Result to Output's Unit

-300000 Joule -->-1.8724519089282E+24 Electron-Volt (Check conversion here)

FINAL ANSWER

-1.8724519089282E+24 ≈ -1.9E+24 Electron-Volt <-- Activation Energy Backward

(Calculation completed in 00.004 seconds)

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Created by Akshada Kulkarni

National Institute of Information Technology (NIIT), Neemrana

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< Arrhenius Equation Calculators

Pre-exponential Factor in Arrhenius Equation for Forward Reaction

LaTeX Go Forward Pre-exponential Factor = Forward reaction rate constant/exp(-(Activation Energy Forward/([R]*Absolute Temperature)))

Arrhenius Equation for Forward Reaction

LaTeX Go Forward reaction rate constant = Forward Pre-exponential Factor*exp(-(Activation Energy Forward/([R]*Absolute Temperature)))

Arrhenius Equation

LaTeX Go Rate Constant = Pre-Exponential Factor*(exp(-(Activation Energy/([R]*Absolute Temperature))))

Pre-exponential Factor in Arrhenius Equation

LaTeX Go Pre-Exponential Factor = Rate Constant/exp(-(Activation Energy/([R]*Absolute Temperature)))

Activation Energy for Backward Reaction Formula

LaTeX Go

Activation Energy Backward = Activation Energy Forward-Enthalpy of Reaction
E_ab = E_af-ΔH

What do you mean by activation energy?

Activation energy, in chemistry, the minimum amount of energy that is required to activate atoms or molecules to a condition in which they can undergo chemical transformation or physical transport. In transition-state theory, the activation energy is the difference in energy content between atoms or molecules in an activated or transition-state configuration and the corresponding atoms and molecules in their initial configuration. The activation energy is usually represented by the symbol Ea in mathematical expressions for such quantities as the reaction rate constant, k.

How to Calculate Activation Energy for Backward Reaction?

Activation Energy for Backward Reaction calculator uses Activation Energy Backward = Activation Energy Forward-Enthalpy of Reaction to calculate the Activation Energy Backward, The Activation energy for backward reaction formula is defined as the minimum amount of energy that is required to activate atoms or molecules to a condition in which they can undergo chemical transformation for a backward reaction. Activation Energy Backward is denoted by E_ab symbol.

How to calculate Activation Energy for Backward Reaction using this online calculator? To use this online calculator for Activation Energy for Backward Reaction, enter Activation Energy Forward (E_af) & Enthalpy of Reaction (ΔH) and hit the calculate button. Here is how the Activation Energy for Backward Reaction calculation can be explained with given input values -> -1.2E+43 = 2.40326599500001E-17-300000.

FAQ

What is Activation Energy for Backward Reaction?

The Activation energy for backward reaction formula is defined as the minimum amount of energy that is required to activate atoms or molecules to a condition in which they can undergo chemical transformation for a backward reaction and is represented as E_ab = E_af-ΔH or Activation Energy Backward = Activation Energy Forward-Enthalpy of Reaction. Activation Energy Forward is the minimum amount of energy that is required to activate atoms or molecules to a condition in which they can undergo a chemical transformation in a forward reaction & The Enthalpy of Reaction is the difference in enthalpy between products and reactants.

How to calculate Activation Energy for Backward Reaction?

The Activation energy for backward reaction formula is defined as the minimum amount of energy that is required to activate atoms or molecules to a condition in which they can undergo chemical transformation for a backward reaction is calculated using Activation Energy Backward = Activation Energy Forward-Enthalpy of Reaction. To calculate Activation Energy for Backward Reaction, you need Activation Energy Forward (E_af) & Enthalpy of Reaction (ΔH). With our tool, you need to enter the respective value for Activation Energy Forward & Enthalpy of Reaction and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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