Vapour Pressure of Air using Dalton's Law Calculator

✖Saturation Vapour Pressure at Water Surface (mm of mercury) is defined as the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases at a given temperature.ⓘ Saturation Vapour Pressure [e_s]			+10% -10%
✖Evaporation from water body (mm/day) is the process by which liquid water from an open water surface is converted directly to water vapor.ⓘ Evaporation from Water Body [E]			+10% -10%
✖The proportionality constant represented by 'Ko' is the ratio between two directly proportional quantities which depends upon the characteristics of the aquifer and the area of the well.ⓘ Proportionality Constant [K_o]			+10% -10%

✖Actual Vapour Pressure is the air in mm of mercury is the vapour pressure exerted by the water in the air.ⓘ Vapour Pressure of Air using Dalton's Law [e_a]

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Formula

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Vapour Pressure of Air using Dalton's Law

Formula

`"e"_{"a"} = "e"_{"s"}-("E"/"K"_{"o"})`

Example

`"3.003764mmHg"="17.54mmHg"-("2907"/"1.5")`

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Vapour Pressure of Air using Dalton's Law Solution

STEP 0: Pre-Calculation Summary

Formula Used

Actual Vapour Pressure = Saturation Vapour Pressure-(Evaporation from Water Body/Proportionality Constant)
e_a = e_s-(E/K_o)
This formula uses 4 Variables

Variables Used

Actual Vapour Pressure - (Measured in Pascal) - Actual Vapour Pressure is the air in mm of mercury is the vapour pressure exerted by the water in the air.
Saturation Vapour Pressure - (Measured in Pascal) - Saturation Vapour Pressure at Water Surface (mm of mercury) is defined as the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases at a given temperature.
Evaporation from Water Body - Evaporation from water body (mm/day) is the process by which liquid water from an open water surface is converted directly to water vapor.
Proportionality Constant - The proportionality constant represented by 'Ko' is the ratio between two directly proportional quantities which depends upon the characteristics of the aquifer and the area of the well.

STEP 1: Convert Input(s) to Base Unit

Saturation Vapour Pressure: 17.54 Millimeter Mercury (0 °C) --> 2338.46788 Pascal (Check conversion here)
Evaporation from Water Body: 2907 --> No Conversion Required
Proportionality Constant: 1.5 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

e_a = e_s-(E/K_o) --> 2338.46788-(2907/1.5)

Evaluating ... ...

e_a = 400.46788

STEP 3: Convert Result to Output's Unit

400.46788 Pascal -->3.0037644199757 Millimeter Mercury (0 °C) (Check conversion here)

FINAL ANSWER

3.0037644199757 ≈ 3.003764 Millimeter Mercury (0 °C) <-- Actual Vapour Pressure

(Calculation completed in 00.004 seconds)

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Coorg Institute of Technology (CIT), Coorg

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< 6 Evaporation Calculators

Rohwers formula (1931)

Go Lake Evaporation = 0.771*(1.465-0.00073*Atmospheric Pressure)*(0.44+0.0733*Mean Wind Velocity at Ground Level)*(Saturation Vapour Pressure-Actual Vapour Pressure)

Meyers formula (1915)

Go Lake Evaporation = Coefficient Accounting for Other Factors*(Saturation Vapour Pressure-Actual Vapour Pressure)*(1+Monthly Mean Wind Velocity/16)

Dalton-Type Equation

Go Lake Evaporation = Coefficient*Wind Speed Correction Factor*(Saturation Vapour Pressure-Actual Vapour Pressure)

Vapour Pressure of Water at given Temperature for Evaporation in Water Bodies

Go Saturation Vapour Pressure = (Evaporation from Water Body/Proportionality Constant)+Actual Vapour Pressure

Vapour Pressure of Air using Dalton's Law

Go Actual Vapour Pressure = Saturation Vapour Pressure-(Evaporation from Water Body/Proportionality Constant)

Dalton's Law of Evaporation

Go Evaporation from Water Body = Proportionality Constant*(Saturation Vapour Pressure-Actual Vapour Pressure)

Vapour Pressure of Air using Dalton's Law Formula

Actual Vapour Pressure = Saturation Vapour Pressure-(Evaporation from Water Body/Proportionality Constant)
e_a = e_s-(E/K_o)

What is Dalton's Law of Evaporation?

Dalton's Law of Evaporation states that the rate of evaporation is proportional to the difference between saturation vapor pressure at water temperature(ew) and actual vapor pressure in the air (ea )

What is the importance of Dalton's Law?

Dalton's Law is especially important in atmospheric studies. Dalton's Law plays a large role in medicine and other breathing areas.

How to Calculate Vapour Pressure of Air using Dalton's Law?

Vapour Pressure of Air using Dalton's Law calculator uses Actual Vapour Pressure = Saturation Vapour Pressure-(Evaporation from Water Body/Proportionality Constant) to calculate the Actual Vapour Pressure, The Vapour Pressure of Air using Dalton's Law formula is defined as the parameters Evaporation E, proportionality constant k and vapour pressure of air ea in Dalton's law which states that Evaporation is proportional to the difference in vapour pressures of water and air. Actual Vapour Pressure is denoted by e_a symbol.

How to calculate Vapour Pressure of Air using Dalton's Law using this online calculator? To use this online calculator for Vapour Pressure of Air using Dalton's Law, enter Saturation Vapour Pressure (e_s), Evaporation from Water Body (E) & Proportionality Constant (K_o) and hit the calculate button. Here is how the Vapour Pressure of Air using Dalton's Law calculation can be explained with given input values -> 0.129761 = 2338.46788-(2907/1.5).

FAQ

What is Vapour Pressure of Air using Dalton's Law?

The Vapour Pressure of Air using Dalton's Law formula is defined as the parameters Evaporation E, proportionality constant k and vapour pressure of air ea in Dalton's law which states that Evaporation is proportional to the difference in vapour pressures of water and air and is represented as e_a = e_s-(E/K_o) or Actual Vapour Pressure = Saturation Vapour Pressure-(Evaporation from Water Body/Proportionality Constant). Saturation Vapour Pressure at Water Surface (mm of mercury) is defined as the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases at a given temperature, Evaporation from water body (mm/day) is the process by which liquid water from an open water surface is converted directly to water vapor & The proportionality constant represented by 'Ko' is the ratio between two directly proportional quantities which depends upon the characteristics of the aquifer and the area of the well.

How to calculate Vapour Pressure of Air using Dalton's Law?

The Vapour Pressure of Air using Dalton's Law formula is defined as the parameters Evaporation E, proportionality constant k and vapour pressure of air ea in Dalton's law which states that Evaporation is proportional to the difference in vapour pressures of water and air is calculated using Actual Vapour Pressure = Saturation Vapour Pressure-(Evaporation from Water Body/Proportionality Constant). To calculate Vapour Pressure of Air using Dalton's Law, you need Saturation Vapour Pressure (e_s), Evaporation from Water Body (E) & Proportionality Constant (K_o). With our tool, you need to enter the respective value for Saturation Vapour Pressure, Evaporation from Water Body & Proportionality Constant 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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