🏔️ Water Phase Diagram Lab

Navigate water's complete thermodynamic $P$-$T$ phase space across Solid, Liquid, Vapor, and Supercritical regimes. Explore the Triple Point ($0.01^\circ\text{C}, 611.65\text{ Pa}$), Critical Point ($374^\circ\text{C}, 218\text{ atm}$), and negative melting slope ($\frac{dP}{dT} < 0$).

Temperature ($T$) °C

Pressure ($P$) atmospheres (atm)

Click anywhere on chart to set Temperature & Pressure

Thermodynamic Phase

LIQUID WATER

Subcooled liquid

Sat. Boiling Temp ($T_{sat}$)

100.0°C

Vapor pressure at T: 0.031 atm

Clapeyron Slope ($\frac{dP}{dT}$)

-13.5 MPa/°C

Negative slope (Regelation)

Degrees of Freedom ($F$)

2 (T and P variable)

Gibbs Phase Rule $F = C - P + 2$