In chemistry, the term molarity refers to the concentration of a solution expressed as the number of moles of solute per liter of solution. It is represented by the symbol "M" and is fundamental in chemical reactions, allowing chemists to understand the proportions of reactants and products involved. Molarity is crucial for calculating how much solute is required for specific reactions, facilitating proper measurements in laboratory settings. It plays a significant role in various applications, ranging from analytical chemistry to industrial processes.