Hello rolnor, I already know how much caffeine is in the soft drinks. what I am trying to calculate is the amount of citrate/citric acid.
I have figured a way to find out how much citric acid based on the sodium content if just citric acid is listed, as well as coverting sodium citrate to determine the amount of citric acid. What I am trying to determine is if the caffeine combines with the citrate on a mono, di, tri level as the citrate is a tri protic acid. By knowing if it would be a mono, di, tri combination, I can then figure out if there is additional citric acid needed or in the case that it only forms a mono combination, I can calculate the additional amount of citrate/citric acid.
I found this from pubchem about caffeine citrate
Commercial citrate of caffeine, though not a definite salt. It is the alkaloid caffeine, with a portion of adherent citric acid, as indicated by its pharmacopoeial name (citrated caffeine).
Can you or any one else explain what they mean with "It is the alkaloid caffeine, with a portion of adherent citric acid," what does this mean in relation to a tri protic acid such as citric acid.?