Question

The potential energy diagram shows the gain and loss of potential energy as water molecules decompose into hydrogen and oxygen. Label the parts of the diagram.

products
reactants
activated
complex
activation
energy
enthalpy of
reaction

chemical potential energy

progress of reaction

Answer 1

Answer : The energy diagram is shown below.

Explanation :

Activated complex : When the reactant molecules absorb energy then their bonds are loosened and new lose bonds are formed between them.

The intermediate formed is known as activated complex and it is an unstable state and immediately dissociates to form the stable products.

Activation energy : It is defined as the minimum amount of energy absorbed by the reactant molecules so that their energy becomes equal to the threshold energy. Or we can say that, the difference between the reactant and the activated complex.

Enthalpy of reaction : It is defined as the energy change that takes place when the reactants go to the products. It is represented as,
`\Delta H`. Or we can say that, the difference between the product energy and the reactant energy.

Hence, the energy diagram is shown below.

Answer 2

Kindly find the attached image.

Step-by-step explanation:

Activation energy: is the difference in potential energy between the activated complex and reactants.

Enthalpy of reaction: is the difference in potential energy between the products and reactants.