1. What is a Boiling Point Calculator at Different Pressures?

Definition: This calculator estimates the boiling point of water based on atmospheric pressure using Antoine's equation.

Purpose: It helps scientists, engineers, and students understand how pressure affects the boiling point of water.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( T \) — Boiling point temperature (°C)
• \( P \) — Pressure (mmHg)

Explanation: This is a form of Antoine's equation that relates the vapor pressure of a substance to its temperature.

3. Importance of Boiling Point Calculation

Details: Understanding boiling points at different pressures is crucial for chemical engineering, cooking at high altitudes, and various industrial processes.

4. Using the Calculator

Tips: Enter the pressure in mmHg (millimeters of mercury). Standard atmospheric pressure is 760 mmHg.

5. Frequently Asked Questions (FAQ)

Q1: What's the boiling point at standard pressure?
A: At 760 mmHg, water boils at 100°C (by definition of the Celsius scale).

Q2: Why does boiling point change with pressure?
A: Lower pressure makes it easier for water molecules to escape into the vapor phase, lowering the boiling point.

Q3: What pressure would make water boil at room temperature?
A: About 23.8 mmHg would make water boil at 25°C (77°F).

Q4: How accurate is this calculation?
A: Very accurate for pure water between 1-760 mmHg pressure.

Q5: What's mmHg in other units?
A: 1 mmHg = 1 torr = 133.322 pascals = 0.01934 psi.