1. What is the Boiling Point Equation?

The boiling point equation calculates the temperature at which water boils under different pressure conditions. It's based on the Clausius-Clapeyron relation and accounts for how pressure affects the boiling point of liquids.

2. How Does the Calculator Work?

The calculator uses the boiling point equation:

Where:

• \( T_b \) — Boiling point (K)
• \( T_0 \) — Standard boiling point (373.15 K)
• \( R \) — Gas constant (8.314 J/mol·K)
• \( \Delta H_{vap} \) — Enthalpy of vaporization (40650 J/mol)
• \( P \) — Pressure (Pa)
• \( P_0 \) — Standard pressure (101325 Pa)

Explanation: The equation shows how boiling temperature decreases with decreasing pressure and increases with increasing pressure.

3. Importance of Boiling Point Calculation

Details: Understanding how pressure affects boiling point is crucial for various applications including high-altitude cooking, industrial processes, meteorological studies, and chemical engineering.

4. Using the Calculator

Tips: Enter pressure in Pascals (Pa). The calculator will compute the corresponding boiling point of water in Kelvin. Pressure must be a positive value.

5. Frequently Asked Questions (FAQ)

Q1: Why does boiling point change with pressure?
A: Boiling occurs when vapor pressure equals atmospheric pressure. Lower pressure means less energy (lower temperature) is needed for boiling to occur.

Q2: What is the boiling point at sea level?
A: At standard atmospheric pressure (101325 Pa), water boils at 100°C or 373.15K.

Q3: How much does boiling point decrease with altitude?
A: Approximately 1°C for every 300 meters of altitude gain, though this varies with weather conditions.

Q4: Can this equation be used for other liquids?
A: Yes, but you would need to use the appropriate values for T₀, ΔH_vap, and P₀ for that specific liquid.

Q5: What are some practical applications?
A: High-altitude cooking adjustments, vacuum distillation processes, pressure cooker design, and weather prediction models.