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Boiling Point Equation:
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The boiling point altitude equation calculates the boiling point of water at different altitudes using a linear approximation. As altitude increases, atmospheric pressure decreases, which lowers the boiling point of water.
The calculator uses the linear approximation equation:
Where:
Explanation: The equation provides a simple linear approximation of how boiling point decreases with increasing altitude, with water boiling at approximately 100°C at sea level.
Details: Understanding how boiling point changes with altitude is crucial for cooking, scientific experiments, industrial processes, and various applications where precise temperature control is required.
Tips: Enter altitude above sea level in meters. The value must be non-negative (≥0 meters).
Q1: Why does boiling point decrease with altitude?
A: As altitude increases, atmospheric pressure decreases, which reduces the energy required for water molecules to escape into the vapor phase, thus lowering the boiling point.
Q2: How accurate is this linear approximation?
A: This is a simplified linear approximation that works reasonably well for most practical purposes, though more complex equations exist for precise scientific calculations.
Q3: What is the boiling point at high altitudes like mountains?
A: At 3000 meters altitude, water boils at approximately 90°C; at 5000 meters, it boils at about 83°C, affecting cooking times and methods.
Q4: Does this apply to other liquids?
A: While all liquids experience boiling point depression with decreasing pressure, the specific rate of change varies for different substances.
Q5: Are there limitations to this equation?
A: This linear approximation may become less accurate at very high altitudes and doesn't account for other atmospheric factors like humidity.