There is no specific chemical formula for lemonade as it can vary depending on the recipe and ingredients used. Lemonade is typically made by mixing lemon juice, water, and sugar, and sometimes additional ingredients such as mint or other flavorings. The chemical composition of lemon juice can also vary depending on the type of lemons used and the juicing process. Here are the chemical formulas for some of the main components of lemonade:

- Water: H2O

- Citric acid (from lemon juice): C6H8O7

- Sucrose (table sugar): C12H22O11

Other ingredients that may be added to lemonade, such as mint or other flavorings, will have their own unique chemical formulas.