COMEDK20269 May 2026Morning ShiftChemistryChemical KineticsActual

Rate law can be determined from a balanced chemical equation if

Options

Aone of the reactants is in excess
Bit is a reversible reaction
Cthere is a sequence of elementary reactions
Dit is an elementary reaction

Correct answer

D. it is an elementary reaction

Step-by-step solution

For an elementary reaction, the reaction occurs in a single step. The molecularity of an elementary reaction is equal to its overall order. Therefore, the rate law can be written directly from the stoichiometric coefficients of the reactants in the balanced chemical equation. Answer: it is an elementary reaction

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