szublimáló

Szublimáló is a term used in chemistry to describe a substance that undergoes sublimation. Sublimation is a phase transition process where a solid changes directly into a gas without passing through the liquid phase. This phenomenon occurs when the vapor pressure of the solid exceeds the surrounding atmospheric pressure.

Several substances exhibit sublimation under certain conditions. Common examples include dry ice, which is solid carbon dioxide, and iodine. Naphthalene, commonly found in mothballs, also readily sublimes at room temperature. The reverse process of sublimation, where a gas transforms directly into a solid, is called deposition or desublimation.

The temperature and pressure at which sublimation occurs are specific to each substance. For instance, dry ice sublimes at atmospheric pressure at -78.5 degrees Celsius. Understanding sublimation is important in various applications, such as freeze-drying, purification of chemicals, and even in certain pyrotechnic displays. The energy required for sublimation is known as the heat of sublimation, which is the sum of the heat of fusion and the heat of vaporization.