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Statement-1: A catayst provides an alter...

Statement-1: A catayst provides an alternative path to the reaction in which conversion of reactants into products take place quickly.
Statement-2: The catalyst forms an activated comlex of lower potential energy, with the reactants by which more number of molecules are able to cross the barrier per unit of time.

A

Statement-1 is True, statement-2 is True, Statement-2 is a correct explantion for Statement-1.

B

Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-1

C

Statement-1 is True, Statement-2 is False.

D

Statement-1 is False, Statement-2 is True.

Text Solution

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The correct Answer is:
a
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Assertion (A) : A catalyst provides an alternative path to the reaction in which conversion of reactants into products takes place quickly Reason (R) : The catalyst forms an activated complex of lower potential energy with the reactants.

Assertion(A): A catalyst speed up a reaction but does not participate in its mechanism. Reason(R): A catalyst provides an alternative path of lower activation energy to the reactants.

Assertion (A) : Catalyst alters the individual energies of the reactants and products Reason (R) : As such more number of molecules are able to cross the barrier per unit time. Delta H or Delta U of the reaction remains unaltered.

Statements : A catalyst doesnot alter the equilibrium constant os a reaction . Expabnations : A catalyst complex with the reactants and provides an alternate path wirh a lower energy of activation for the reacton . The forwaord and forwad and reverse reactions are affected to the same extent .

Statement-2: The reciprocal of time in which 66% of the reactant is conveted to product is equal to the rate constant of first order reaction. Because Stetment-2 : The rate constant for first order reaction depends on initial concentration of reactants.