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Sahay Sir > Question Answers > NCERT Exemplar Class 11 > Chemistry > Assertion (A) : The enthalpy of reaction remains constant in the presence of a catalyst. Reason (R) : A catalyst participating in the reaction forms different activated complex and lowers down the activation energy but the difference in energy of reactant and product remains the same.

Assertion (A) : The enthalpy of reaction remains constant in the presence of a catalyst. Reason (R) : A catalyst participating in the reaction forms different activated complex and lowers down the activation energy but the difference in energy of reactant and product remains the same.

Assertion (A): Order of the reaction can be zero or fractional · Reason (R): We cannot determine order from balanced chemical equation ·