Diet Coke dosnt have sugar, which makes liquid thicker. Lower viscosity = CO₂ escapes faster.
It also contains aspartame and potassium benzoate, which slightly lower surface tension and help bubbles form.
I recall Mythbusters doing a thing on this as well testing other sodas and carbonated things. Diet Cike itself is a part of why there is such an energetic reaction.
Diet Coke dosnt have sugar, which makes liquid thicker. Lower viscosity = CO₂ escapes faster. It also contains aspartame and potassium benzoate, which slightly lower surface tension and help bubbles form.
https://www.reagent.co.uk/blog/why-do-mentos-react-with-coca-cola/
I sit corrected!
I recall Mythbusters doing a thing on this as well testing other sodas and carbonated things. Diet Cike itself is a part of why there is such an energetic reaction.