Reaction rate

[David Sarkissian 1K]

Is there an easy way to tell which reaction is fast and which is slow in a a series of reactions if we are not told in advance? Are there any tell-tale signs that give it away?

[Michelle Wang 4I]

Typically, reactions that are termolecular are slow since it is less likely for three molecules to collide with the right amount of energy for the reaction to occur.