Bicarbonate, also known as hydrogen carbonate, is a chemical compound with the formula HCO₃⁻. It plays a crucial role in maintaining the pH balance in the body, acting as a buffer to neutralize acids. Bicarbonate is naturally found in the blood and is produced by the pancreas to aid in digestion. In addition to its biological functions, bicarbonate is commonly used in various applications, including baking, where it acts as a leavening agent. It is also found in antacids to relieve heartburn and indigestion by neutralizing stomach acid.