How many tsp of baking powder in 8.1 oz?

Baking soda and baking powder are different ingredients and cannot be substituted for one another. Baking soda is a base, while baking powder is a combination of baking soda and an acid. This difference means that baking soda requires an acidic ingredient in order to react and produce carbon dioxide gas, which is what makes baked goods rise. Baking powder, on the other hand, already contains an acid, so it does not require any additional acidic ingredients.