Boiling Point Formula:
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Definition: This calculator estimates the boiling point of water based on atmospheric pressure using the Antoine equation.
Purpose: It helps scientists, engineers, and students determine the boiling temperature of water at different atmospheric pressures.
The calculator uses the formula:
Where:
Explanation: The Antoine equation provides a relationship between vapor pressure and temperature for pure components.
Details: Accurate boiling point estimation is crucial for chemical processes, cooking at high altitudes, and various industrial applications.
Tips: Enter the atmospheric pressure in Pascals (default is sea level pressure: 101325 Pa). The value must be > 0.
Q1: What is the Antoine equation?
A: It's a semi-empirical relationship between vapor pressure and temperature, with constants specific to each substance.
Q2: Why does boiling point change with pressure?
A: As pressure decreases, less energy is needed for water molecules to escape into the vapor phase, lowering the boiling point.
Q3: What's the standard atmospheric pressure?
A: Standard atmospheric pressure at sea level is 101325 Pascals (or 1 atm).
Q4: How accurate is this calculation?
A: The Antoine equation provides good estimates for water between 1-200°C and pressures from 0.1-1000 kPa.
Q5: Can I use this for other liquids?
A: No, this uses constants specific to water. Other substances require different Antoine equation constants.