Final answer:
The given equation represents the reaction between hydrogen gas (H₂) and iodine gas (I₂) to produce hydrogen iodide gas (HI). The reaction is exothermic, meaning it releases energy in the form of heat. The value ΔH∘rxn represents the standard enthalpy change of the reaction, which is -9.5 kJ/mol.
Step-by-step explanation:
An energy diagram is a visual representation of the energy changes that occur during a chemical reaction. The diagram provided shows the potential energy of the reactants, but it is incomplete, so we can't fully analyze the diagram.
However, based on the information given, we can infer a few things:
- 1. The reactants (H₂ and I₂) have a higher potential energy than the products (HI).
- 2. The reaction is exothermic since the ΔH∘rxn value is negative (-9.5 kJ/mol).
- 3. The activation energy, which represents the energy barrier that the reactants must overcome to form products, is not provided in the diagram.
Your question is incomplete, but most probably the full question was:
Evaluate the equation:
H 2(g)+I 2(g)→2 H I(g)
ΔH∘r x n=−9.5 k J/m o l r x n
H2(g) and I2(g) can react to produce HI(g), as represented above. Shown below is an incomplete energy diagram for the reaction. The potential energy of the reactants is indicated on the diagram.