Sciencemadness Discussion Board

Glacial acetic acid and baking soda slow reaction

print118 - 18-3-2023 at 07:44

Hi guys,

When I mixed glacial acetic acid with baking soda, it did not react basically at all. It produced a little bit of CO2 but no fizzing. I would have assumed that when it would fizz a lot, since mixing vinegar and baking soda fizzes and produces a good amount of CO2. The only difference is I guess the amount of water, but how does that accelerate the reaction?

So my question is why was the reaction with pure acetic acid and baking soda so slow compared to vinegar?

Texium - 18-3-2023 at 09:41

It's simple. Sodium bicarbonate is soluble in water but not in acetic acid. The ions that need to exchange can do so freely in aqueous solution, but not so much at a solid-liquid interface.