Question

Which location represents the enthalpy of reaction?

Answer 1

Answer: Arrow E represents the enthalpy of the reaction.

Step-by-step explanation:

Enthalpy of the reaction is defined as the difference in the potential energy of the products and the reactants. It is represented as
`\Delta H_(rxn)`

`\Delta H_(rxn)=H_(products)-H_(reactants)`

From the image, the points marked represents:

Point A represents the potential energy of the reactants.

Point B represents the intermediate state or transition state in a reaction.

Point C represents the potential energy of the products.

Arrow D represents the activation energy of the reaction.

Arrow E represents the enthalpy of the reaction.

Hence, arrow E represents the enthalpy of the reaction.

Answer 2

Kindly find the attached image.

Step-by-step explanation:

• All the data related to the potential energy diagram is shown in the attached image.

Reactants, intermediate, products, activation energy (Ea), and enthalpy change (ΔH).

• Enthalpy change (ΔH) is the difference in energy between reactants and products.

ΔH = E of products - E of reactants.