1. What is Total Pressure of Mixture of Immiscible Liquids?

Definition: The total pressure of a mixture of immiscible liquids is the sum of their pure state vapor pressures since each liquid contributes independently to the total pressure.

Purpose: This calculation is important in chemical engineering and physical chemistry for systems where two liquids don't mix (like oil and water).

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P \) — Total pressure of the mixture (Pascal)
• \( P_A° \) — Vapor pressure of pure component A (Pascal)
• \( P_B° \) — Vapor pressure of pure component B (Pascal)

Explanation: Since the liquids are immiscible, each exerts its own vapor pressure independently, and the total pressure is simply the sum of these individual pressures.

3. Importance of This Calculation

Details: Understanding this principle is crucial for distillation processes, vapor-liquid equilibrium calculations, and designing separation systems for immiscible liquids.

4. Using the Calculator

Tips: Enter the vapor pressures of both pure components in Pascals. The calculator will sum them to give the total pressure of the mixture.

5. Frequently Asked Questions (FAQ)

Q1: Why do immiscible liquids follow this simple addition rule?
A: Because they don't mix, each liquid behaves as if the other weren't present, maintaining its own vapor pressure independently.

Q2: Does temperature affect this calculation?
A: Yes, but only indirectly - temperature affects the individual vapor pressures (P_A° and P_B°), which are your input values.

Q3: Can this be extended to more than two immiscible liquids?
A: Yes, for any number of immiscible liquids, the total pressure is the sum of all their individual vapor pressures.

Q4: How is this different from Raoult's Law?
A: Raoult's Law applies to miscible liquids where the vapor pressure depends on mole fraction. For immiscible liquids, mole fraction is effectively 1 for each component.

Q5: What are some real-world applications?
A: Steam distillation of essential oils, separation of organic compounds from water, and various industrial separation processes.