Critical Pressure of Real Gas given Wohl Parameter a, and other Actual and Reduced Parameters Calculator

✖Wohl parameter a is an empirical parameter characteristic to equation obtained from Wohl model of real gas.ⓘ Wohl Parameter a [a]			+10% -10%
✖Temperature of Real Gas is the degree or intensity of heat present in a substance or object.ⓘ Temperature of Real Gas [T_rg]			+10% -10%
✖Reduced Temperature is the ratio of the actual temperature of the fluid to its critical temperature. It is dimensionless.ⓘ Reduced Temperature [T_r]			+10% -10%
✖Molar Volume of Real Gas or Molar gas volume is one mole of any gas at a specific temperature and pressure has a fixed volume.ⓘ Molar Volume of Real Gas [V'_m]			+10% -10%
✖Reduced Molar Volume for P-R Method of a fluid is computed from the ideal gas law at the substance's critical pressure and temperature per mole.ⓘ Reduced Molar Volume for P-R Method [V'_r]			+10% -10%

✖Critical Pressure for Peng Robinson Model is the minimum pressure required to liquify a substance at the critical temperature.ⓘ Critical Pressure of Real Gas given Wohl Parameter a, and other Actual and Reduced Parameters [P,_c]

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Formula

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Critical Pressure of Real Gas given Wohl Parameter a, and other Actual and Reduced Parameters

Formula

P, c = \frac{a}{6 \cdot (\frac{T rg}{T r}) \cdot ({(\frac{V' m}{V' r})}^{2})}

Example

2.6E+7 Pa = \frac{266}{6 \cdot (\frac{300 K}{1.46}) \cdot ({(\frac{0.0224 m³}{246.78})}^{2})}

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Critical Pressure of Real Gas given Wohl Parameter a, and other Actual and Reduced Parameters Solution

STEP 0: Pre-Calculation Summary

Formula Used

Critical Pressure for Peng Robinson Model = Wohl Parameter a/(6*(Temperature of Real Gas/Reduced Temperature)*((Molar Volume of Real Gas/Reduced Molar Volume for P-R Method)^2))
P,_c = a/(6*(T_rg/T_r)*((V'_m/V'_r)^2))
This formula uses 6 Variables

Variables Used

Critical Pressure for Peng Robinson Model - (Measured in Pascal) - Critical Pressure for Peng Robinson Model is the minimum pressure required to liquify a substance at the critical temperature.
Wohl Parameter a - Wohl parameter a is an empirical parameter characteristic to equation obtained from Wohl model of real gas.
Temperature of Real Gas - (Measured in Kelvin) - Temperature of Real Gas is the degree or intensity of heat present in a substance or object.
Reduced Temperature - Reduced Temperature is the ratio of the actual temperature of the fluid to its critical temperature. It is dimensionless.
Molar Volume of Real Gas - (Measured in Cubic Meter) - Molar Volume of Real Gas or Molar gas volume is one mole of any gas at a specific temperature and pressure has a fixed volume.
Reduced Molar Volume for P-R Method - Reduced Molar Volume for P-R Method of a fluid is computed from the ideal gas law at the substance's critical pressure and temperature per mole.

STEP 1: Convert Input(s) to Base Unit

Wohl Parameter a: 266 --> No Conversion Required
Temperature of Real Gas: 300 Kelvin --> 300 Kelvin No Conversion Required
Reduced Temperature: 1.46 --> No Conversion Required
Molar Volume of Real Gas: 0.0224 Cubic Meter --> 0.0224 Cubic Meter No Conversion Required
Reduced Molar Volume for P-R Method: 246.78 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

P,_c = a/(6*(T_rg/T_r)*((V'_m/V'_r)^2)) --> 266/(6*(300/1.46)*((0.0224/246.78)^2))

Evaluating ... ...

P,_c = 26187007.3694196

STEP 3: Convert Result to Output's Unit

26187007.3694196 Pascal --> No Conversion Required

FINAL ANSWER

26187007.3694196 ≈ 2.6E+7 Pascal <-- Critical Pressure for Peng Robinson Model

(Calculation completed in 00.004 seconds)

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Home » Chemistry » Kinetic Theory of Gases » Real Gas » Wohl Model of Real Gas » Critical Pressure of Real Gas given Wohl Parameter a, and other Actual and Reduced Parameters

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< Wohl Model of Real Gas Calculators

Critical Pressure of Real Gas using Wohl Equation given Wohl Parameter c

Go Critical Pressure for Peng Robinson Model = Wohl Parameter c/(4*(Critical Temperature of Real Gas^2)*(Critical Molar Volume for Peng Robinson Model^3))

Critical Pressure of Real Gas using Wohl Equation given Wohl Parameter a

Go Critical Pressure for Peng Robinson Model = Wohl Parameter a/(6*Critical Temperature of Real Gas*(Critical Molar Volume for Peng Robinson Model^2))

Critical Pressure of Wohl's Real Gas using other Critical Parameters

Go Critical Pressure for Peng Robinson Model = (4*[R]*Critical Temperature of Real Gas)/(15*Critical Molar Volume for Peng Robinson Model)

Critical Pressure of Real Gas using Wohl Equation given Wohl Parameter b

Go Critical Pressure for Peng Robinson Model = ([R]*Critical Temperature of Real Gas)/(15*Wohl Parameter b)

Critical Pressure of Real Gas given Wohl Parameter a, and other Actual and Reduced Parameters Formula

What are Real Gases?

Real gases are non ideal gases whose molecules occupy space and have interactions; consequently, they do not adhere to the ideal gas law. To understand the behavior of real gases, the following must be taken into account:
- compressibility effects;
- variable specific heat capacity;
- van der Waals forces;
- non-equilibrium thermodynamic effects;
- issues with molecular dissociation and elementary reactions with variable composition.

How to Calculate Critical Pressure of Real Gas given Wohl Parameter a, and other Actual and Reduced Parameters?

Critical Pressure of Real Gas given Wohl Parameter a, and other Actual and Reduced Parameters calculator uses Critical Pressure for Peng Robinson Model = Wohl Parameter a/(6*(Temperature of Real Gas/Reduced Temperature)*((Molar Volume of Real Gas/Reduced Molar Volume for P-R Method)^2)) to calculate the Critical Pressure for Peng Robinson Model, The Critical Pressure of Real Gas given Wohl Parameter a, and other Actual and Reduced Parameters formula is defined as the minimum pressure required to liquefy a substance at the critical temperature. Critical Pressure for Peng Robinson Model is denoted by P,_c symbol.

How to calculate Critical Pressure of Real Gas given Wohl Parameter a, and other Actual and Reduced Parameters using this online calculator? To use this online calculator for Critical Pressure of Real Gas given Wohl Parameter a, and other Actual and Reduced Parameters, enter Wohl Parameter a (a), Temperature of Real Gas (T_rg), Reduced Temperature (T_r), Molar Volume of Real Gas (V'_m) & Reduced Molar Volume for P-R Method (V'_r) and hit the calculate button. Here is how the Critical Pressure of Real Gas given Wohl Parameter a, and other Actual and Reduced Parameters calculation can be explained with given input values -> 9.2E+7 = 266/(6*(300/1.46)*((0.0224/246.78)^2)).

FAQ

What is Critical Pressure of Real Gas given Wohl Parameter a, and other Actual and Reduced Parameters?

The Critical Pressure of Real Gas given Wohl Parameter a, and other Actual and Reduced Parameters formula is defined as the minimum pressure required to liquefy a substance at the critical temperature and is represented as P,_c = a/(6*(T_rg/T_r)*((V'_m/V'_r)^2)) or Critical Pressure for Peng Robinson Model = Wohl Parameter a/(6*(Temperature of Real Gas/Reduced Temperature)*((Molar Volume of Real Gas/Reduced Molar Volume for P-R Method)^2)). Wohl parameter a is an empirical parameter characteristic to equation obtained from Wohl model of real gas, Temperature of Real Gas is the degree or intensity of heat present in a substance or object, Reduced Temperature is the ratio of the actual temperature of the fluid to its critical temperature. It is dimensionless, Molar Volume of Real Gas or Molar gas volume is one mole of any gas at a specific temperature and pressure has a fixed volume & Reduced Molar Volume for P-R Method of a fluid is computed from the ideal gas law at the substance's critical pressure and temperature per mole.

How to calculate Critical Pressure of Real Gas given Wohl Parameter a, and other Actual and Reduced Parameters?

The Critical Pressure of Real Gas given Wohl Parameter a, and other Actual and Reduced Parameters formula is defined as the minimum pressure required to liquefy a substance at the critical temperature is calculated using Critical Pressure for Peng Robinson Model = Wohl Parameter a/(6*(Temperature of Real Gas/Reduced Temperature)*((Molar Volume of Real Gas/Reduced Molar Volume for P-R Method)^2)). To calculate Critical Pressure of Real Gas given Wohl Parameter a, and other Actual and Reduced Parameters, you need Wohl Parameter a (a), Temperature of Real Gas (T_rg), Reduced Temperature (T_r), Molar Volume of Real Gas (V'_m) & Reduced Molar Volume for P-R Method (V'_r). With our tool, you need to enter the respective value for Wohl Parameter a, Temperature of Real Gas, Reduced Temperature, Molar Volume of Real Gas & Reduced Molar Volume for P-R Method and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Critical Pressure for Peng Robinson Model?

In this formula, Critical Pressure for Peng Robinson Model uses Wohl Parameter a, Temperature of Real Gas, Reduced Temperature, Molar Volume of Real Gas & Reduced Molar Volume for P-R Method. We can use 3 other way(s) to calculate the same, which is/are as follows -

Critical Pressure for Peng Robinson Model = Wohl Parameter a/(6*Critical Temperature of Real Gas*(Critical Molar Volume for Peng Robinson Model^2))
Critical Pressure for Peng Robinson Model = Wohl Parameter c/(4*(Critical Temperature of Real Gas^2)*(Critical Molar Volume for Peng Robinson Model^3))
Critical Pressure for Peng Robinson Model = ([R]*Critical Temperature of Real Gas)/(15*Wohl Parameter b)

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