The chemical formula for ascorbic acid, commonly known as vitamin C, is C6H8O6. This important nutrient acts as an antioxidant and plays a crucial role in various physiological functions, including collagen synthesis, immune function, and the absorption of iron from plant-based foods. Ascorbic acid is found in various fruits and vegetables, including citrus fruits, strawberries, and bell peppers. Since humans cannot synthesize vitamin C, it must be obtained through diet to maintain proper health and prevent conditions such as scurvy.