Consider the following enthalpy diagram and enthalpies of intermediate and overall chemical reactions.
which of the following statements is true?
the overall chemical reaction is exothermic.
there are two intermediate reactions in this system.
the third intermediate reaction is endothermic.
the longest arrow represents the overall chemical reaction.

The overall chemical reaction is exothermic is the correct statement.

Explanation: As seen from the given image, the reactants are at higher energy level and products are at lower energy level and the excess energy is released in the form of heat. These reactions are considered as exothermic reactions.

Hence, the reaction given in the image is an exothermic reaction.

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

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