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Van Der Waals Interaction Energy Formula

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Van der Waals Interaction Energy include attraction and repulsions between atoms, molecules, and surfaces, as well as other intermolecular forces. Check FAQs

U VWaals = - \frac{A}{12 \cdot π \cdot {(h)}^{2}}

U_VWaals - Van der Waals Interaction Energy?A - Hamaker Coefficient?h - Surface Separation?π - Archimedes' constant?

Van Der Waals Interaction Energy Example

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Here is how the Van Der Waals Interaction Energy equation looks like with Values.

Here is how the Van Der Waals Interaction Energy equation looks like with Units.

Here is how the Van Der Waals Interaction Energy equation looks like.

-8.3E-27 = - \frac{3.2E-21}{12 \cdot 3.1416 \cdot {(101)}^{2}}

-8.3E-27J = - \frac{3.2E-21J}{12 \cdot 3.1416 \cdot {(101m)}^{2}}

-8.3E-27 = - \frac{3.2E-21}{12 \cdot 3.1416 \cdot {(101)}^{2}}

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Van Der Waals Interaction Energy Solution

Follow our step by step solution on how to calculate Van Der Waals Interaction Energy?

FIRST Step Consider the formula

U VWaals = - \frac{A}{12 \cdot π \cdot {(h)}^{2}}

Next Step Substitute values of Variables

∴

U VWaals = - \frac{3.2E-21J}{12 \cdot π \cdot {(101m)}^{2}}

Next Step Substitute values of Constants

∴

U VWaals = - \frac{3.2E-21J}{12 \cdot 3.1416 \cdot {(101m)}^{2}}

Next Step Prepare to Evaluate

∴

U VWaals = - \frac{3.2E-21}{12 \cdot 3.1416 \cdot {(101)}^{2}}

Next Step Evaluate

∴

U VWaals = -8.32101130435031E-27J

LAST Step Rounding Answer

∴

U VWaals = -8.3E-27J

Van Der Waals Interaction Energy Formula Elements

Variables

Constants

Van der Waals Interaction Energy

Van der Waals Interaction Energy include attraction and repulsions between atoms, molecules, and surfaces, as well as other intermolecular forces.

Symbol: U_VWaals

Measurement: EnergyUnit: J

Note: Value can be positive or negative.

Formulas to find Van der Waals Interaction Energy

Hamaker Coefficient

Hamaker coefficient A can be defined for a Van der Waals body–body interaction.

Symbol: A

Measurement: EnergyUnit: J

Note: Value can be positive or negative.

Formulas to find Hamaker Coefficient

Surface Separation

Surface separation is the distance between two surfaces.

Symbol: h

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Surface Separation

Archimedes' constant

Archimedes' constant is a mathematical constant that represents the ratio of the circumference of a circle to its diameter.

Symbol: π

Value: 3.14159265358979323846264338327950288

Other formulas in BET Adsorption Isotherm category

Go Mass of Adsorbent for Langmuir Adsorption

m L = \frac{x gas \cdot (1 + k \cdot P gas)}{k \cdot P gas}

Go Mass of Gas Adsorbed in grams for Langmuir Adsorption

x gas = \frac{m L \cdot k \cdot P gas}{1 + (k \cdot P gas)}

Go Surface Area of Adsorbent Covered

θ = \frac{k \cdot P gas}{1 + (k \cdot P gas)}

Go Adsorption constant k using Freundlich Adsorption Constant

k = \frac{x gas}{m \cdot {P gas}^{\frac{1}{n}}}

How to Evaluate Van Der Waals Interaction Energy?

Van Der Waals Interaction Energy evaluator uses Van der Waals Interaction Energy = -(Hamaker Coefficient)/(12*pi*(Surface Separation)^2) to evaluate the Van der Waals Interaction Energy, The Van Der Waals Interaction Energy formula is defined as van der Waals interaction energy per unit area. Van der Waals Interaction Energy is denoted by U_VWaals symbol.

How to evaluate Van Der Waals Interaction Energy using this online evaluator? To use this online evaluator for Van Der Waals Interaction Energy, enter Hamaker Coefficient (A) & Surface Separation (h) and hit the calculate button.

FAQs on Van Der Waals Interaction Energy

What is the formula to find Van Der Waals Interaction Energy?

The formula of Van Der Waals Interaction Energy is expressed as Van der Waals Interaction Energy = -(Hamaker Coefficient)/(12*pi*(Surface Separation)^2). Here is an example- -8.3E-27 = -(3.2E-21)/(12*pi*(101)^2).

How to calculate Van Der Waals Interaction Energy?

With Hamaker Coefficient (A) & Surface Separation (h) we can find Van Der Waals Interaction Energy using the formula - Van der Waals Interaction Energy = -(Hamaker Coefficient)/(12*pi*(Surface Separation)^2). This formula also uses Archimedes' constant .

Can the Van Der Waals Interaction Energy be negative?

Yes, the Van Der Waals Interaction Energy, measured in Energy can be negative.

Which unit is used to measure Van Der Waals Interaction Energy?

Van Der Waals Interaction Energy is usually measured using the Joule[J] for Energy. Kilojoule[J], Gigajoule[J], Megajoule[J] are the few other units in which Van Der Waals Interaction Energy can be measured.

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