Soda is sodium carbonate, baking soda is sodium bicarbonate, and the two chemical formulas are different. The difference between baking soda and baking soda powder is mainly in name, function, alkalinity and usage. Usually the baking powder we use is soda, but baking soda is alkali. For example, baking soda is added to fried dough sticks, soda biscuits, cakes and tortillas.

It is stable at temperature, easy to decompose when heated, and rapidly decomposes above 50℃, completely loses carbon dioxide at 270℃, remains unchanged in dry air, and slowly decomposes in humid air. React with acid to generate corresponding salt, water and carbon dioxide, and react with alkali to generate corresponding carbonate and water.

Nature characteristics

Sodium bicarbonate, commonly known as baking soda, is an inorganic compound with the chemical formula NaHCO? White fine crystals, less soluble in water than sodium carbonate. Baking soda, also known as edible alkali in daily life, has a wide range of uses. When it is used in diet, baking soda can be added when making various pasta and snacks, making the pastry loose and soft.

Soda powder is white powder or monoclinic crystalline powder, odorless, salty and soluble in water, but less soluble than sodium carbonate in water, insoluble in ethanol, and slightly alkaline in aqueous solution. When making walnut cakes, the powder is decomposed by heating to produce carbon dioxide, which is heavier than air, so the gas expands "horizontally" on both sides.