[Dickite]

Hello fellow chemists,

I'm currently in the middle of preparing a chemiluminescence demo, which is for a chemistry project. However, I cannot figure out the following:

1. Why both sodium carbonate and sodium bicarbonate are used together (don't they practically serve the same purpose?)
2. The purpose of ammonium carbonate in the demo
3. Would adding fluorescein to the luminescing solution change the blue glow to a green glow?

This is the link to the demo itself. Thank you for your assistance.
https://chem.libretexts.org/Demos%2C_Techniques%2C_and_Experiments/Lecture_Demonstrations/Luminol

[Borek]

Hint: carbonate and bicarbonate are a pair of an acid and its conjugate base.

Not sure about ammonia, most likely it is there to keep copper complexed and in the solution.

[Dickite]

Hint: carbonate and bicarbonate are a pair of an acid and its conjugate base.

Not sure about ammonia, most likely it is there to keep copper complexed and in the solution.

Thanks! I completely forgot about the equilibrium between carbonate and bicarbonate.