Linked from
The 16 pages that link to Bicarbonate, each with the reason it gives.
AlkalinityBroader topic: It is usually the largest contributor to alkalinity in natural waters.
AnionBroader topic: Its acid–base reactions let bicarbonate regulate pH in biological fluids.
Baking sodaBroader topic: It is the ion present in sodium bicarbonate and drives its acid reactions.
Ammonium bicarbonateBroader topic: It is the anion that completes ammonium bicarbonate’s formula.