One type of alcohol breathalyzer used by law enforcement involves the following reaction. The amount of ethanol present is determined by a change in the color of the solution. What type of reaction is this

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In reversible reaction chemistry equilibrium is attained when the forward and reverse reactions are taking place at the same rate, thus, the concentrations of reactants and products remain the same. a reversible reaction is a chemical reaction where the reactants form products that, in turn, react together to give the reactants back. in irreversible reactions on the other hand, the reactants react to form the products, which cannot revert back into reactants.