Sublimation is the process of a substance transitioning directly from the solid state to the gaseous state without going through the liquid phase. It is a common phenomenon in chemistry, and understanding the equation that represents it is an essential part of mastering the subject.
Equations for Sublimation
There are several equations that represent sublimation, all of which describe the transition of a substance from solid to gas. The most commonly used equation for sublimation is the Clausius-Clapeyron equation, which states that the pressure of a substance is directly proportional to the temperature at which the substance sublimes. The other equations used to describe sublimation include the Ideal Gas Law, the Gibbs-Helmholtz equation, and the Van der Waals equation.Comparison
| Equation | Description |
|---|---|
| Clausius-Clapeyron equation | Pressure of a substance is directly proportional to the temperature at which the substance sublimes |
| Ideal Gas Law | Relates pressure, volume, temperature, and amount of a substance |
| Gibbs-Helmholtz equation | Relates internal energy, entropy, and enthalpy of a system |
| Van der Waals equation | Relates pressure, volume, and temperature of a substance |