A chemical reaction can be reversed if the energy of the products exceeds the activation energy threshold.
Reversible reactions are reactions which can proceed in two directions.
In reversible reactions, reactants can form products and products can also break down to form reactants.
For a chemical reaction to be reversed, the original reaction conditions leading to formation of products are reversed.
Therefore, a chemical reaction can be reversed if the energy of the products exceeds the activation energy threshold.
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