Final answer:
The decomposition of hydrogen iodide (HI) produces hydrogen (H₂) and iodine (I₂) as products, occurring at high temperatures and influenced by temperature and reactant/product concentrations. The rate of decomposition is determined by the number of effective collisions, and HI's behavior is comparable to other halogen hydrides in that high temperatures favor decomposition.
Step-by-step explanation:
Gaseous hydrogen iodide (HI) decomposes into hydrogen (H₂) and iodine (I₂) when exposed to high temperatures. This is a decomposition reaction.
A) The products of the decomposition of hydrogen iodide are hydrogen gas (H₂) and iodine gas (I₂).
B) The temperature range for the decomposition of hydrogen iodide can be inferred from various experiments. For instance, in one exercise the reaction reached equilibrium at 740 K, indicating that decomposition occurs at high temperatures, typically above room temperature.
C) The rate of decomposition reaction is influencedaa by several factors, most notably temperature and the concentration of reactants and products. According to collision theory, it is the number of effective collisions per second that influences the rate, and higher temperatures generally increase the frequency and energy of these collisions.
D) Compared to other halogen hydrides, HI decomposes endothermically, meaning it requires heat to break the bonds. The equilibrium of the decomposition reaction can be shifted by changing the temperature, with high temperatures favoring the reverse reaction and low temperatures favoring the forward reaction that forms HI.