Partial Vapour Pressure of Immiscible Liquid given Partial Pressure of other Liquid Calculator

Vapor Pressure Formula:

\[ P_A° = \frac{W_A \times M_B \times P_B°}{M_A \times W_B} \]

Weight of Liquid A:

Molecular Mass of Liquid B:

kg/mol

Vapor Pressure of Pure Component B:

Molecular Mass of Liquid A:

kg/mol

Weight of Liquid B:

Vapor Pressure of Pure Component A (Pa):

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1. What is Partial Vapour Pressure of Immiscible Liquid?

Definition: This calculator determines the vapor pressure of one component in a mixture of immiscible liquids based on the known vapor pressure of the other component.

Purpose: It helps in understanding and predicting the behavior of immiscible liquid mixtures in chemical processes and thermodynamics.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ P_A° = \frac{W_A \times M_B \times P_B°}{M_A \times W_B} \]

Where:

\( P_A° \) — Vapor pressure of pure component A (Pa)
\( W_A \) — Weight of liquid A (kg)
\( M_B \) — Molecular mass of liquid B (kg/mol)
\( P_B° \) — Vapor pressure of pure component B (Pa)
\( M_A \) — Molecular mass of liquid A (kg/mol)
\( W_B \) — Weight of liquid B (kg)

Explanation: The formula relates the vapor pressures of two immiscible liquids through their molecular masses and weights in the mixture.

3. Importance of Vapor Pressure Calculation

Details: Accurate vapor pressure calculations are crucial for distillation processes, phase equilibrium studies, and chemical engineering applications involving immiscible liquids.

4. Using the Calculator

Tips: Enter all required values in consistent units (kg for weights, kg/mol for molecular masses, Pa for pressures). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What are immiscible liquids?
A: Immiscible liquids are those that don't mix to form a homogeneous solution (like oil and water).

Q2: Why does this formula work for immiscible liquids?
A: For immiscible liquids, each component exerts its own vapor pressure independently of the other.

Q3: What units should I use for molecular mass?
A: Use kg/mol for consistency with SI units, but you can use g/mol if you adjust other units accordingly.

Q4: Can this be used for miscible liquids?
A: No, this formula is specifically for immiscible liquid mixtures.

Q5: How accurate is this calculation?
A: It provides theoretical values assuming ideal behavior and complete immiscibility.