Would a red bull react with vinegar?

Mixing Red Bull and vinegar will not produce a dangerous chemical reaction. Red Bull is an energy drink that mainly contains water, caffeine, sugar, and other flavouring ingredients. Vinegar, on the other hand, is a mild acidic liquid primarily composed of acetic acid and water.

When you mix these two substances, you'll essentially be diluting the vinegar with the Red Bull. The acidity level of the mixture might increase slightly, but not to a harmful or explosive extent. The resulting combination will likely taste unpleasant due to the clashing flavours, but it shouldn't pose any significant risks.