In the reaction H−H → H + H, what describes an average energy change of 436 kJ/mol?
A. The energy change will be positive as bonds are being broken.
B. The energy change will be positive as bonds are being formed.
C. The energy change will be negative as bonds are being broken.
D. The energy change will be negative as bonds are being formed.

A. The energy change will be positive as bonds are being broken.

Explanation:

The breaking of a bond is an endothermic process. An endothermic process is one in which energy must be absorbed in order for the process to take place.

In breaking a chemical bond,energy is absorbed as the bonding species are being separated from each other.

Hence, the energy change of this process shown will be positive as bonds are being broken.