1. What is the Boiling Point of Water?

The boiling point of water is the temperature at which the vapor pressure of the liquid equals the pressure surrounding the liquid and the liquid changes into a vapor. At standard atmospheric pressure (1 atm), pure water boils at 100°C (212°F).

2. How Does the Calculator Work?

The calculator uses the standard boiling point of water:

For other pressures, it applies a simplified approximation:

Where:

• \( T_b \) — Boiling point temperature (°C)
• \( P \) — Pressure (atm)
• \( \Delta T_b \) — Change in boiling point from standard

3. Importance of Boiling Point Calculation

Details: Understanding water's boiling point is essential in cooking, chemistry experiments, engineering applications, and meteorological studies. The boiling point changes with altitude and weather conditions.

4. Using the Calculator

Tips: Enter pressure in atmospheres (atm). Leave the field empty to calculate the standard boiling point at 1 atm. For accurate results at different altitudes, use precise atmospheric pressure values.

5. Frequently Asked Questions (FAQ)

Q1: Why does water boil at different temperatures at different altitudes?
A: Atmospheric pressure decreases with altitude, which lowers the boiling point of water.

Q2: How much does the boiling point change with altitude?
A: Approximately 1°C for every 293-meter increase in altitude (or 1°F for every 500-foot increase).

Q3: Does adding salt affect the boiling point?
A: Yes, adding salt increases the boiling point slightly (boiling point elevation), but the effect is small for typical cooking amounts.

Q4: What is the boiling point of water in a pressure cooker?
A: In a typical pressure cooker (at about 1.3-1.5 atm), water boils at approximately 105-110°C.

Q5: Why is the boiling point important in cooking?
A: Cooking times and temperatures need adjustment at different altitudes to ensure proper food preparation.