Below is the equation for the formation of hydrofluoric acid:

H2 (g) + F2 (g) ←→ 2 HF (g) + 546kJ

What type of reaction does this equation represent?

The answer to your question is Synthesis and Endothermic

Explanation:

Balanced chemical reaction

H₂ + F₂ ⇒ 2HF + 546 kJ

Chemical reactions can be classified in different ways, so I suggest two names of this reaction.

1. - This is a synthesis reaction because two different reactants form a new compound.

2. - This is an endothermic reaction because it was needed to supply 546 kJ of energy so that the reaction proceeds.