Sodium bicarbonate, commonly known as baking soda, will react with acidic substances (such as acetic acid and citric acid) to produce a large amount of carbon dioxide gas. Usually carbonated drinks, such as soda, beer, champagne, etc. Most of them carry carbon dioxide. Carbon dioxide gas is easily soluble in water and will volatilize when heated.

Step 2 supply

Cold boiled water, baking soda, citric acid, sugar, salt, edible essence, tray scale, large plastic bottle Coca-Cola, small soda bottle.

operate

Pour 1000mL of cold boiled water into a plastic bottle of Coca-Cola, then add 240g of white sugar, a small amount of salt, 12g of baking soda and a few drops of edible essence in turn, and shake well to dissolve all the solids; Pour 200ml of cold boiled water into a baking soda bottle and dissolve 12g of citric acid. Put two bottles of solution in the refrigerator and ice it. When drinking, quickly pour the liquid in the small bottle into the big bottle, tighten the lid of the big bottle and shake it a few times to make it fully mixed. It tastes sweet, sour and cool, as well as the unique spicy taste and some salty taste of carbon dioxide gas.