Plural of bicarbonate; chemical compounds containing hydrogen, carbon, and oxygen that are commonly used in baking and cleaning.
From bi- (two) + carbonate. The term emerged in 19th-century chemistry to describe salts formed by the partial neutralization of carbonic acid, containing two equivalents of the HCO3- ion.
Baking soda is literally sodium bicarbonate—the same stuff your body produces naturally to keep your blood from becoming too acidic, which is why it's also used as an antacid!
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