What is the boiling point of water at altitude?

Using Clausius-Clapeyron: at 1000m (P ≈ 89.9 kPa), water boils at 96.6°C; at 3000m (70.1 kPa), 89.7°C; at Mount Everest 8848m (31 kPa), 70°C. Cooking takes longer at altitude.

What is Antoine equation and how is it related?

Antoine equation log(P) = A - B/(C+T) is an empirical fit to the Clausius-Clapeyron shape. More accurate than the integrated Clausius-Clapeyron over wide temperature ranges. Tabulated constants for thousands of compounds.

How does vapor pressure relate to humidity?

Relative humidity RH = P_vapor / P_saturation(T). Dew point is T where P_vapor = P_saturation. Clausius-Clapeyron gives P_saturation at any T, enabling dew point calculation from measured RH.

Clausius-Clapeyron Equation Calculator

Calculate vapor pressure vs temperature: d(ln P)/dT = ΔH_vap/(RT²). Integrated form: ln(P₂/P₁) = (ΔH_vap/R)·(1/T₁ - 1/T₂). Boiling point at different altitudes. Relative humidity calculation.

2D stress state at a point. All stresses in MPa.

σx — Normal Stress X (MPa)

σy — Normal Stress Y (MPa)

τxy — Shear Stress (MPa)

⚙ Mechanical Note: Results are based on standard textbook formulas and ISO/AASHTO references. Always verify critical designs with applicable codes (ISO 898, AASHTO 1993, AISC, Eurocode 3) and a qualified engineer.

How to Use

Enter the values for the patient or scenario you are assessing. Calculate vapor pressure vs temperature: d(ln P)/dT = ΔH_vap/(RT²). Integrated form: ln(P₂/P₁) = (ΔH_vap/R)·(1/T₁ - 1/T₂). Boiling point at different altitudes. Relative humidity calculation. Use the clausius-clapeyron result to inform your clinical assessment.

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Frequently Asked Questions

What is the boiling point of water at altitude?

What is Antoine equation and how is it related?

How does vapor pressure relate to humidity?