The diagram shows the potential energy changes for a reaction pathway. (10 points) Potential Energy B C TA Reaction Pathway Part 1: Does the diagram illustrate an endothermic or an exothermic reaction? Give reasons in support of your answer. Part 2: Describe how you can determine the total change in enthalpy and activation energy from the diagram and if each is positive or negative.​

Endothermic reaction

Explanation:

The reaction is endothermic  because the line at the end is higher than it was in the beginning of the graph, showing that this graph is endothermic. In an endothermic reaction, the products will always have more energy than the reactants. The line shows the energy, and there's more energy at the end, meaning at the end of the equation (where the products are in a chemical equation) has more energy.

Part 2:

The positive or negative sign of enthalpy also relates to the slope of the line on a potential energy diagram. In endothermic reactions, the slope is always positive. In exothermic relationships, the slope is always negative.  

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be