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Surface Pressure Formula

GoSurface Pressure using Wilhelmy-Plate Method Formula

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The Surface Pressure of Thin Film is the difference in interfacial tension between a clean interface and an interface in the presence of an emulsifier. Check FAQs

Π = γ o - γ

Π - Surface Pressure of Thin Film?γ_o - Surface Tension of Clean Water Surface?γ - Surface Tension of Fluid?

Surface Pressure Example

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Here is how the Surface Pressure equation looks like with Values.

Here is how the Surface Pressure equation looks like with Units.

Here is how the Surface Pressure equation looks like.

0.001 = 74 - 73

0.001Pa = 74mN/m - 73mN/m

0.001 = 74 - 73

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Surface Pressure Solution

Follow our step by step solution on how to calculate Surface Pressure?

FIRST Step Consider the formula

Π = γ o - γ

Next Step Substitute values of Variables

∴

Π = 74mN/m - 73mN/m

Next Step Convert Units

∴

Π = 0.074N/m - 0.073N/m

Next Step Prepare to Evaluate

∴

Π = 0.074 - 0.073

LAST Step Evaluate

∴

Π = 0.001Pa

Surface Pressure Formula Elements

Variables

Surface Pressure of Thin Film

The Surface Pressure of Thin Film is the difference in interfacial tension between a clean interface and an interface in the presence of an emulsifier.

Symbol: Π

Measurement: PressureUnit: Pa

Note: Value should be greater than 0.

Formulas to find Surface Pressure of Thin Film

Surface Tension of Clean Water Surface

Surface Tension of Clean Water Surface is the energy, or work, required to increase the surface area of a clean water surface due to intermolecular forces.

Symbol: γ_o

Measurement: Surface TensionUnit: mN/m

Note: Value should be greater than 0.

Formulas to find Surface Tension of Clean Water Surface

Surface Tension of Fluid

Surface Tension of Fluid is the energy or work required to increase the surface area of a fluid due to intermolecular forces.

Symbol: γ

Measurement: Surface TensionUnit: mN/m

Note: Value should be greater than 0.

Formulas to find Surface Tension of Fluid

Other Formulas to find Surface Pressure of Thin Film

Go Surface Pressure using Wilhelmy-Plate Method

Π = - (\frac{ΔF}{2 \cdot (t + W plate)})

Other formulas in Surface Pressure category

Go Parachor given Surface Tension

P s = (\frac{M molar}{ρ liq - ρ v}) \cdot {(γ)}^{\frac{1}{4}}

Go Height of Magnitude of Capillary Rise

h c = \frac{γ}{(\frac{1}{2}) \cdot (R \cdot ρ fluid \cdot [g])}

Go Surface Tension for very Thin Plate using Wilhelmy-Plate Method

γ = \frac{F thin plate}{2 \cdot W plate}

Go Surface Tension Force given Density of Fluid

γ = (\frac{1}{2}) \cdot (R \cdot ρ fluid \cdot [g] \cdot h c)

How to Evaluate Surface Pressure?

Surface Pressure evaluator uses Surface Pressure of Thin Film = Surface Tension of Clean Water Surface-Surface Tension of Fluid to evaluate the Surface Pressure of Thin Film, The Surface Pressure formula is defined as the difference in surface tension between a clean air-water surface and solution. Surface Pressure of Thin Film is denoted by Π symbol.

How to evaluate Surface Pressure using this online evaluator? To use this online evaluator for Surface Pressure, enter Surface Tension of Clean Water Surface (γ_o) & Surface Tension of Fluid (γ) and hit the calculate button.

FAQs on Surface Pressure

What is the formula to find Surface Pressure?

The formula of Surface Pressure is expressed as Surface Pressure of Thin Film = Surface Tension of Clean Water Surface-Surface Tension of Fluid. Here is an example- 0.001 = 0.074-0.073.

How to calculate Surface Pressure?

With Surface Tension of Clean Water Surface (γ_o) & Surface Tension of Fluid (γ) we can find Surface Pressure using the formula - Surface Pressure of Thin Film = Surface Tension of Clean Water Surface-Surface Tension of Fluid.

What are the other ways to Calculate Surface Pressure of Thin Film?

Here are the different ways to Calculate Surface Pressure of Thin Film-

Surface Pressure of Thin Film=-(Change in Force/(2*(Thickness of Plate+Weight of Plate)))

Can the Surface Pressure be negative?

No, the Surface Pressure, measured in Pressure cannot be negative.

Which unit is used to measure Surface Pressure?

Surface Pressure is usually measured using the Pascal[Pa] for Pressure. Kilopascal[Pa], Bar[Pa], Pound Per Square Inch[Pa] are the few other units in which Surface Pressure can be measured.

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Surface Pressure Formula

​GoSurface Pressure using Wilhelmy-Plate Method Formula

Surface Pressure Example

Surface Pressure Solution

Surface Pressure Formula Elements

Other Formulas to find Surface Pressure of Thin Film

Other formulas in Surface Pressure category

How to Evaluate Surface Pressure?

FAQs on Surface Pressure

Variable Name

GoSurface Pressure using Wilhelmy-Plate Method Formula