2HI(g) + Br₂(g) → 2HBr(g) + I₂(g)
Here's a breakdown of the equation:
* HI(g): Hydrogen iodide gas
* Br₂(g): Bromine gas
* HBr(g): Hydrogen bromide gas
* I₂(g): Iodine gas
Explanation:
This reaction is a classic example of a halogen displacement reaction. Bromine is more reactive than iodine, so it displaces iodine from hydrogen iodide. The bromine atoms combine with hydrogen to form hydrogen bromide, while the iodine atoms combine to form iodine gas.
Important notes:
* The reaction is reversible, meaning it can proceed in both directions. However, the forward reaction is favored under standard conditions.
* The reaction is exothermic, meaning it releases heat.
* The reaction requires a catalyst to proceed at a reasonable rate.
