Moderate

A reaction involving two different reactants can never be

Correct answer: A. Unimolecular reaction

  • A. Unimolecular reaction
  • B. First-order reaction
  • C. Second-order reaction
  • D. Bimolecular reaction

Explanation

A unimolecular reaction involves the decomposition of a single molecule into products. By definition, it requires only one reactant molecule. Therefore, a reaction involving two different reactants cannot be unimolecular.

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About Reaction Kinetics

Reaction kinetics relates reaction rate to concentration, temperature, surface area and catalysts. Questions cover rate laws, reaction order, rate constants, activation energy and the activated complex, including how a catalyst lowers the activation energy without changing the overall energy change or equilibrium position.

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