Surface Tension Formula:
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Definition: Surface Tension of Liquid Methane is the energy, or work, required to increase the surface area of liquid methane due to intermolecular forces.
Purpose: This calculator helps determine the surface tension of liquid methane at various temperatures, which is important in cryogenic and chemical engineering applications.
The calculator uses the formula:
Where:
Explanation: The formula calculates how surface tension decreases as temperature approaches the critical temperature of methane.
Details: Surface tension affects fluid behavior in containers, capillary action, and phase interfaces. Accurate calculation is crucial for designing methane storage and transport systems.
Tips: Enter the temperature in Kelvin (must be between 0K and 190.54K). The calculator will return the surface tension in Newtons per meter (N/m).
Q1: Why does surface tension decrease with temperature?
A: As temperature increases, molecular kinetic energy increases, weakening the intermolecular forces that create surface tension.
Q2: What is the maximum temperature I can enter?
A: The formula is valid up to 190.54K (just below methane's critical temperature of 190.55K).
Q3: What are typical surface tension values for liquid methane?
A: At boiling point (111.66K), surface tension is about 18.3 mN/m. It decreases as temperature increases.
Q4: How accurate is this formula?
A: The formula provides good estimates but actual values may vary slightly depending on purity and pressure conditions.
Q5: What units does the calculator use?
A: Temperature input is in Kelvin (K) and output is in Newtons per meter (N/m).