Debye-Hückel equation

The Debye-Hückel equation describes how ions in a solution influence each other's electrical potential, especially in electrolyte solutions. When charged particles, like salts, dissolve in water, they don’t just exist independently; their electric fields interact and create a "shield" effect that reduces each ion's effective charge. This equation helps quantify this interaction, allowing scientists to predict how ions behave and how their activity (or how "available" they are to react) changes with concentration. It is fundamental in understanding electrolytes, batteries, and many biological and chemical processes involving charged species in solution.