This reaction is highly exothermic (releases heat) and can be represented by the following chemical equation:

H₂ + Cl₂ → 2HCl

Hydrogen chloride is a colorless gas with a pungent, acidic odor. It is highly soluble in water, and when dissolved in water, it forms hydrochloric acid (HCl(aq)), a strong acid.

Here are some additional details:

* Uses of hydrogen chloride: It is used in the production of various chemicals, including plastics, pharmaceuticals, and fertilizers.

* Safety: Hydrogen chloride is corrosive and toxic. Proper safety precautions must be taken when handling it.

* Other possible reactions: Chlorine and hydrogen can react in different ratios to form other compounds, but hydrogen chloride is the most common and important product of their reaction.

Let me know if you have any other questions!