Final answer:
To keep a reaction from reaching equilibrium, maintain an excess of either the reactant or the product. This is known as Le Chatelier's principle.
Step-by-step explanation:
In order to keep a reaction from reaching equilibrium, you can maintain an excess of either the reactant or the product. By doing so, you shift the equilibrium position away from the side with the excess and towards the side that is deficient. This is known as Le Chatelier's principle. For example, if you have a reaction where A + B ⇌ C, adding more A or removing C would shift the equilibrium towards the product side.