emäsen

Emäsen is a Finnish term that translates to "base" or "alkaline" in English, primarily used in chemistry and related fields. It refers to substances that have a pH greater than 7. In aqueous solution, emäsen typically release hydroxide ions (OH⁻). Common examples of emäsen include sodium hydroxide (NaOH) and potassium hydroxide (KOH).

Emäsen are characterized by their ability to neutralize acids, forming salt and water in a process known as neutralization. They often have a bitter taste and can feel slippery to the touch. Strong emäsen, like those mentioned above, are corrosive and can cause severe burns. Weaker emäsen, such as ammonia (NH₃), are less hazardous but can still be irritating.

The concept of emäsen is fundamental to understanding acid-base chemistry. In organic chemistry, the term can also refer to a basic functional group within a molecule, such as an amine group. The presence of such groups influences the molecule's reactivity and properties. In everyday life, emäsen are found in various cleaning products, soaps, and some industrial processes.