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A potential energy diagram is shown.

A graph is plotted with Potential Energy in KJ on the y axis and Reaction Pathway on the x axis. The graph starts at 30 on the y axis and it is initially horizontal, labeled Reactants, and then rises up as a smooth curve and reaches its peak when y is 65 kilojoules. The curve comes down until y is 55 kilojoules where it becomes horizontal again, and it is labeled Products.

What is the total change in enthalpy of this reaction?

25 kJ
30 kJ
35 kJ
55 kJ

Sagot :

victoronyangooketch

Answer:

25kJ

Explanation:

Given the initial energy to be 30kJ

The energy change from the initial energy to the peak energy = (65-30) kJ

= 35kJ

since the second energy change was a drop in energy it is regarded negative

= (55-65)

= -10kJ

Therefore total energy change

= (35-10)kJ

= 25kJ

pstnonsonjoku

From the statements in the question, the enthalpy change  is 25 kilojoules

The enthalpy of a reaction

The enthalpy change of reaction is defined as the difference between the energy of the products and the energy of the reactants.

Now we can see from the statements in the question that the energy of the reactants is 30 kJ while that of the products is 55 kilojoules hence the enthalpy change for the reaction is; 55 kilojoules - 30 kilojoules  = 25 kilojoules

Learn more about enthalpy: https://brainly.com/question/13805601

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