Redlich Kwong Parameter at Critical Point Calculator

✖Critical Temperature is the highest temperature at which the substance can exist as a liquid. At this phase boundaries vanish, and the substance can exist both as a liquid and vapor.ⓘ Critical Temperature [T_c]			+10% -10%
✖Critical Pressure is the minimum pressure required to liquify a substance at the critical temperature.ⓘ Critical Pressure [P_c]			+10% -10%

✖Redlich–Kwong parameter a is an empirical parameter characteristic to equation obtained from Redlich–Kwong model of real gas.ⓘ Redlich Kwong Parameter at Critical Point [a]

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Redlich Kwong Parameter at Critical Point Solution

STEP 0: Pre-Calculation Summary

Formula Used

Redlich–Kwong Parameter a = (0.42748*([R]^2)*(Critical Temperature^(5/2)))/Critical Pressure
a = (0.42748*([R]^2)*(T_c^(5/2)))/P_c
This formula uses 1 Constants, 3 Variables

Constants Used

[R] - Universal gas constant Value Taken As 8.31446261815324

Variables Used

Redlich–Kwong Parameter a - Redlich–Kwong parameter a is an empirical parameter characteristic to equation obtained from Redlich–Kwong model of real gas.
Critical Temperature - (Measured in Kelvin) - Critical Temperature is the highest temperature at which the substance can exist as a liquid. At this phase boundaries vanish, and the substance can exist both as a liquid and vapor.
Critical Pressure - (Measured in Pascal) - Critical Pressure is the minimum pressure required to liquify a substance at the critical temperature.

STEP 1: Convert Input(s) to Base Unit

Critical Temperature: 647 Kelvin --> 647 Kelvin No Conversion Required
Critical Pressure: 218 Pascal --> 218 Pascal No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

a = (0.42748*([R]^2)*(T_c^(5/2)))/P_c --> (0.42748*([R]^2)*(647^(5/2)))/218

Evaluating ... ...

a = 1443405.57676536

STEP 3: Convert Result to Output's Unit

1443405.57676536 --> No Conversion Required

FINAL ANSWER

1443405.57676536 ≈ 1.4E+6 <-- Redlich–Kwong Parameter a

(Calculation completed in 00.021 seconds)

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University of Hawaiʻi at Mānoa (UH Manoa), Hawaii, USA

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< Redlich Kwong Parameter Calculators

Redlich Kwong Parameter given Pressure, Temperature and Molar Volume of Real Gas

LaTeX Go Redlich–Kwong Parameter a = ((([R]*Temperature)/(Molar Volume-Redlich–Kwong parameter b))-Pressure)*(sqrt(Temperature)*Molar Volume*(Molar Volume+Redlich–Kwong parameter b))

Redlich Kwong Parameter a, given Reduced and Actual Pressure

LaTeX Go Redlich–Kwong Parameter a = (0.42748*([R]^2)*((Temperature/Reduced Temperature)^(5/2)))/(Pressure/Reduced Pressure)

Redlich Kwong Parameter b at Critical Point

LaTeX Go Parameter b = (0.08664*[R]*Critical Temperature)/Critical Pressure

Redlich Kwong Parameter at Critical Point

LaTeX Go Redlich–Kwong Parameter a = (0.42748*([R]^2)*(Critical Temperature^(5/2)))/Critical Pressure

Redlich Kwong Parameter at Critical Point Formula

LaTeX Go

Redlich–Kwong Parameter a = (0.42748*([R]^2)*(Critical Temperature^(5/2)))/Critical Pressure
a = (0.42748*([R]^2)*(T_c^(5/2)))/P_c

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 Redlich Kwong Parameter at Critical Point?

Redlich Kwong Parameter at Critical Point calculator uses Redlich–Kwong Parameter a = (0.42748*([R]^2)*(Critical Temperature^(5/2)))/Critical Pressure to calculate the Redlich–Kwong Parameter a, Redlich Kwong parameter at critical point formula is defined as is empirical parameter characteristic to equation obtained from Redlich–Kwong model of real gas. Redlich–Kwong Parameter a is denoted by a symbol.

How to calculate Redlich Kwong Parameter at Critical Point using this online calculator? To use this online calculator for Redlich Kwong Parameter at Critical Point, enter Critical Temperature (T_c) & Critical Pressure (P_c) and hit the calculate button. Here is how the Redlich Kwong Parameter at Critical Point calculation can be explained with given input values -> 1.4E+6 = (0.42748*([R]^2)*(647^(5/2)))/218.

FAQ

What is Redlich Kwong Parameter at Critical Point?

Redlich Kwong parameter at critical point formula is defined as is empirical parameter characteristic to equation obtained from Redlich–Kwong model of real gas and is represented as a = (0.42748*([R]^2)*(T_c^(5/2)))/P_c or Redlich–Kwong Parameter a = (0.42748*([R]^2)*(Critical Temperature^(5/2)))/Critical Pressure. Critical Temperature is the highest temperature at which the substance can exist as a liquid. At this phase boundaries vanish, and the substance can exist both as a liquid and vapor & Critical Pressure is the minimum pressure required to liquify a substance at the critical temperature.

How to calculate Redlich Kwong Parameter at Critical Point?

Redlich Kwong parameter at critical point formula is defined as is empirical parameter characteristic to equation obtained from Redlich–Kwong model of real gas is calculated using Redlich–Kwong Parameter a = (0.42748*([R]^2)*(Critical Temperature^(5/2)))/Critical Pressure. To calculate Redlich Kwong Parameter at Critical Point, you need Critical Temperature (T_c) & Critical Pressure (P_c). With our tool, you need to enter the respective value for Critical Temperature & Critical Pressure 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 Redlich–Kwong Parameter a?

In this formula, Redlich–Kwong Parameter a uses Critical Temperature & Critical Pressure. We can use 2 other way(s) to calculate the same, which is/are as follows -

Redlich–Kwong Parameter a = ((([R]*Temperature)/(Molar Volume-Redlich–Kwong parameter b))-Pressure)*(sqrt(Temperature)*Molar Volume*(Molar Volume+Redlich–Kwong parameter b))
Redlich–Kwong Parameter a = (0.42748*([R]^2)*((Temperature/Reduced Temperature)^(5/2)))/(Pressure/Reduced Pressure)

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