If, in a particular process, reactants are able to form products, and products are also able to form reactants, then this process may be described as:. A. a reversible process. B. an elementary process. C. at equilibrium. D. forbidden. E. a forward process.

A. Reversible Process

Explanation:

Going through the meaning of the options we have;

A Reversible: This reaction involves a backward and forward step.. This means that reactant  would react to form products and products in turn wold react to form reactants. This is the correct option.

B. Elementary process: This refers to a single step reaction with a single transition state and no intermediates. This option is wrong because that is not what the question says.

C. Equilibrium Reaction: This refers to a reaction in which there is no change in the concentration of the reactants and products. Rate of forward reaction is equal to the rate of backward reaction.

D. Forbidden Reaction: This is not the correct option.

E. Forward process: This refers to the reaction that involves reactants reacting to form products. This is also not correct as the question states that the products are also able to form reactants.

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the answer would be a