Question

При каком условии алюминий реагируе с йодом?

Answer 1

  При добавлении нескольких капель воды начинается бурная реакция. Каталитическое действие воды обусловлено частичным диспропорционированием иода и растворением оксидной пленки в иодоводородной кислоте:I2 + H2 O = HI + HIO 
Al2 O3 + 6 HI = 2 AlI3 + 3 H2 OОписание эксперимента:В фарфоровой чашке находится смесь алюминиевых опилок и кристаллического иода (2:1) по объему. При добавлении воды из пипетки начинается бурная реакция с выделением паров йода.

Answer 2

Aluminum Reaction with Iodine

When aluminum reacts with iodine, it forms aluminum iodide. This reaction is represented by the chemical equation:

2Al + 3I2 → 2AlI3

Aluminum iodide is a chemical compound with the formula AlI3. It is a salt composed of aluminum and iodine. The reaction between aluminum and iodine is a synthesis reaction, where two or more simple substances combine to form a more complex product.

The reaction between aluminum and iodine is a redox reaction, where aluminum undergoes oxidation and iodine undergoes reduction. In this reaction, aluminum loses electrons to form aluminum ions, and iodine gains electrons to form iodide ions.

The reaction between aluminum and iodine is highly exothermic, meaning it releases a significant amount of heat. This is due to the formation of strong bonds in the aluminum iodide compound.

The reaction between aluminum and iodine is typically carried out in a laboratory setting under controlled conditions to ensure safety and proper handling of the reactants and products.