Parachor Formula:
From: | To: |
Definition: This calculator estimates the parachor value based on the critical volume of a substance.
Purpose: It helps in determining surface tension related properties of substances using their critical volume.
The calculator uses the formula:
Where:
Explanation: The critical volume is multiplied by a constant factor of 0.78 to obtain the parachor value.
Details: Parachor is important in surface chemistry for predicting surface tension and other interfacial properties.
Tips: Enter the critical volume in cubic meters (m³). The value must be > 0.
Q1: What is parachor?
A: Parachor is a quantity related to surface tension that correlates molecular structure with surface properties.
Q2: What is critical volume?
A: Critical volume is the volume occupied by unit mass of a substance at its critical temperature and pressure.
Q3: Why is the constant 0.78 used?
A: This empirical constant relates critical volume to parachor based on experimental observations.
Q4: What are typical values for critical volume?
A: Critical volumes vary widely but are often in the range of 10^-5 to 10^-3 m³/mol for common substances.
Q5: What units does this calculator use?
A: The calculator uses SI units - cubic meters for volume and m³/(J/m²)^0.25 for parachor.