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Given the balanced equation representing reaction:
N2 + energy ==> N + N
Which statement describes this reaction?
( I) Bonds are broken, and the reaction is endothermic.
(2) Bonds are broken , and the reaction is exothermic.
(3) Bonds are formed, and the reaction is endothermic.
(4) Bonds are formed, and the reaction is exothermic.

Sagot :

pyromorphite
( I) Bonds are broken, and the reaction is endothermic.
(2) Bonds are broken , and the reaction is exothermic.
(3) Bonds are formed, and the reaction is endothermic.
(4) Bonds are formed, and the reaction is exothermic.

Answer: Option (1) is the correct answer.

Explanation:

In a [tex]N_{2}[/tex] molecule, the nitrogen atoms are bonded together by triple bond.

Therefore, in order to break this triple bond high heat or energy has to be provided.

Thus, the reaction [tex]N_{2} + energy \rightarrow N + N[/tex] shows that N triple bond N is broken down as energy is absorbed by [tex]N_{2}[/tex] molecule.

Hence, we can conclude that in the given reaction bonds are broken, and the reaction is endothermic.

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