Question

Hydrogen iodide, HI, decomposes in the gas phase to produce hydrogen, H2, and iodine, I2. What is the activation energy for the reaction?

a) 12.5kJ/mol
b) 24.8kJ/mol
c) 30.7kJ/mol
d) 42.1kJ/mol

Answer 1

The activation energy for the decomposition of hydrogen iodide cannot be determined without additional information.

Step-by-step explanation:

The question asks for the activation energy for the decomposition of hydrogen iodide (HI) into hydrogen (H2) and iodine (I2) in the gas phase. In order to determine the activation energy, more information is needed, such as the rate constant at different temperatures. Without that information, we cannot calculate the activation energy. Therefore, we cannot choose any of the given options as the correct answer.