Surface Tension Given Critical Temperature Calculator

Surface Tension Formula:

\[ γTc = ko \times (1 - (T/Tc))^{k1} \]

Constant for each Liquid (ko):

N/m

Temperature (T):

Critical Temperature (Tc):

Empirical Factor (k1):

Surface Tension of Fluid (γTc):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is Surface Tension Given Critical Temperature?

Surface Tension Given Critical Temperature is the energy or work required to increase the surface area of a fluid due to intermolecular forces, calculated based on the relationship with critical temperature.

2. How Does the Calculator Work?

The calculator uses the surface tension formula:

\[ γTc = ko \times (1 - (T/Tc))^{k1} \]

Where:

\( γTc \) — Surface Tension of Fluid (N/m)
\( ko \) — Constant for each Liquid (N/m)
\( T \) — Temperature (K)
\( Tc \) — Critical Temperature (K)
\( k1 \) — Empirical Factor

Explanation: The equation describes how surface tension decreases as temperature approaches the critical temperature, where the phase boundary vanishes.

3. Importance of Surface Tension Calculation

Details: Accurate surface tension calculation is crucial for understanding fluid behavior, interfacial phenomena, and various industrial processes involving liquids.

4. Using the Calculator

Tips: Enter constant value (ko) in N/m, temperature and critical temperature in Kelvin, and empirical factor. Temperature must be less than critical temperature.

5. Frequently Asked Questions (FAQ)

Q1: What is the physical significance of surface tension?
A: Surface tension represents the contractive tendency of liquid surfaces, resulting from cohesive forces between molecules at the interface.

Q2: Why does surface tension decrease with temperature?
A: As temperature increases, molecular kinetic energy increases, reducing the cohesive forces between molecules and thus decreasing surface tension.

Q3: What happens to surface tension at critical temperature?
A: At critical temperature, surface tension approaches zero as the distinction between liquid and vapor phases disappears.

Q4: How is the empirical factor determined?
A: The empirical factor is determined through experimental observations and varies for different liquids based on their molecular properties.

Q5: What are typical values for surface tension?
A: Surface tension values typically range from 20-75 mN/m for common liquids at room temperature, with water having about 72 mN/m at 20°C.