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Water Boiling Point vs Pressure Calculator

Boiling Point Formula:

\[ T = \frac{1730.63}{5.1962 - \log_{10}(P)} - 233.426 \]

mmHg
°C

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1. What is a Water Boiling Point vs Pressure Calculator?

Definition: This calculator determines the boiling point of water at a given pressure using the Antoine equation.

Purpose: It helps chemists, engineers, and students understand how pressure affects water's boiling temperature.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ T = \frac{1730.63}{5.1962 - \log_{10}(P)} - 233.426 \]

Where:

Explanation: This is a form of the Antoine equation that relates vapor pressure to temperature for water.

3. Importance of Boiling Point Calculation

Details: Understanding boiling points at different pressures is crucial for distillation processes, high-altitude cooking, and industrial applications.

4. Using the Calculator

Tips: Enter the pressure in mmHg (millimeters of mercury). 760 mmHg = 1 atmosphere. The pressure must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why does boiling point change with pressure?
A: Boiling occurs when vapor pressure equals atmospheric pressure. At lower pressures, less energy is needed to reach this equilibrium.

Q2: What's the boiling point at standard pressure?
A: At 760 mmHg (1 atm), water boils at 100°C (212°F).

Q3: How accurate is this calculation?
A: This provides a good estimate for pure water between 1 mmHg and 760 mmHg.

Q4: What about other units for pressure?
A: Convert your pressure to mmHg first (1 atm = 760 mmHg = 101.325 kPa).

Q5: Does this work for other liquids?
A: No, this equation is specific to water. Other substances have different Antoine equation parameters.

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