1, the balloon will explode when it touches citric acid because citric acid contains aromatic hydrocarbon, which is soluble, which will make the latex layer of the balloon thinner and thinner, and the pressure it can bear will be smaller and smaller, resulting in unstable pressure and uneven tension in the balloon and explosion.

2. Therefore, when playing with balloons, you should pay attention to avoid the balloons being close to substances containing acidic dissolved components, such as oranges, grapefruit and lemons.