Critical State Calculator

The Critical State Calculator can be used to determine the critical point properties of a substance, such as pressure, temperature, and volume.

Input Parameters

Calculation Results

Calculation Formula

Critical Volume (Vc) is calculated using the formula:

Vc = 3 * R * Tc / Pc
Where:
Vc = Critical Volume
R = Ideal Gas Constant (0.0821 L·atm/(K·mol))
Tc = Critical Temperature
Pc = Critical Pressure

Critical State Calculator Usage Guide

Learn how to use the Critical State Calculator and its working principles

How to Use

  1. Enter the molecular weight of the substance in g/mol.
  2. Input the critical temperature in Kelvin (K).
  3. Provide the critical pressure in atmospheres (atm).
  4. Click the "Calculate" button to compute the critical volume.
  5. The result will be displayed in cubic centimeters per mole (cm³/mol).

Working Principle

The calculator uses the ideal gas law modified for the critical point conditions. The critical volume is the volume occupied by one mole of a substance at its critical temperature and pressure. This is an important parameter in thermodynamics and is used in the design of industrial processes such as refrigeration and petrochemical refining.