Question

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Answer 1

Answer:

Exothermic.

Explanation:

The formation of ammonia from nitrogen and hydrogen is exothermic reaction.

Three moles of hydrogen react with one mole of nitrogen and form two moles of ammonia and some amount of energy is also released.

Chemical equation:

N₂ + 3H₂ → 2NH₃+ energy

Exothermic reaction:

The type of reactions in which energy is released are called exothermic reactions.

In this type of reaction energy needed to break the bonds are less than the energy released during the bond formation.

For example:

Chemical equation:

C + O₂   →  CO₂

ΔH = -393 Kj/mol

it can be written as,

C + O₂   →  CO₂ + 393 Kj/mol