Sodium bicarbonate, commonly known as baking soda, reacts with acidic substances (such as acetic acid, citric acid, etc.) to produce large amounts of carbon dioxide gas. In general, the gas-carrying beverages such as soda, beer, champagne, etc., the gas is mostly carbon dioxide. Carbon dioxide gas is easier to dissolve in water, and will be volatilized when heated.

2. Supplies

Cool water, baking soda, citric acid, sugar, salt, food flavorings, pallet scales, Coca-Cola plastic bottles, small soda bottles.

3. operation

Take 1000mL of cool water into a large plastic bottle of Coca-Cola, and then successively add 240g of sugar, a small amount of salt, 12g of baking soda and a few drops of edible flavor, shaking to make the solids are all dissolved; in a small soda bottle filled with 200mL of cool water, dissolve 12g of citric acid. Chill both the small and large bottles in the refrigerator. To drink, the small bottle of liquid quickly poured into the large bottle, tighten the lid of the large bottle shaking a few times, so that it is fully mixed can be consumed. Its taste sweet and sour cool, but also has a carbon dioxide gas unique spicy flavor and some salty taste.