The Le Chatelier-Braun Principle is a fundamental principle in chemistry that describes the behavior of chemical equilibria when the conditions are changed. Some synonyms for this principle are the principle of least resistance, the equilibrium shift principle, or the law of chemical equilibrium. The principle states that if a chemical system is in equilibrium and a stress is applied, the system will respond by shifting the equilibrium in a way that partially counteracts the stress. The stress could be changes in temperature, pressure, concentration, or the addition of a reactant or a product. Understanding the Le Chatelier-Braun Principle is essential when predicting and controlling chemical reactions in industrial applications.