[science]

Hello!!!!

I have a question regarding the impact on alkalinity of dissolving CO2. I understand that in principle CO2 should not affect total alkalinity since it releases it forms the same amount of molar equivalents from protnons (H+) and carbonate species (CO32- and HCO3-). however, if I have a high concentration of Ca2+ in my media and of ammonia in the form of ammonia and ammonium.... is there a chance that injecting CO2 could precipiate or dissolve some carbonated precipitated that will have an impact on alkalinity?

thanks

[Borek]

As far as I remember, alkalinity is a measure of how much acid solution can absorb before reaching a predefined pH. When you dissolve CO₂ you technically add an acid, so the alkalinity should go down.