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this post was submitted on 20 Mar 2025
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Anticonsumption
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baking soda
washing soda
I think it's a chemical reaction that dislodges the Hydrogen from the molecule. OP said "until the water evaporates". Seems to check out with the formula.
Also the "extra" carbonate group is dislodged as carbon dioxide:
2 NaHCO~3~ (baking soda) → Na~2~CO~3~ (washing soda) + H~2~O + CO~2~