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State one condition under which a bimole...

State one condition under which a bimolecular reaction may be kinetically of first order reactions.

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This is possible in case of the reactants is taken in large excess so that its concentration changes very slightly in the reaction. The reaction is pseudo first order reaction. For example, hydrolysis of an ester in acidic medium.
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Knowledge Check

  • Under what conditions a bimolecular reaction may be kinetically of first order ?

    A
    when both reactants have same concentration
    B
    when one of the reacting species is in large excess
    C
    when the reaction is at equilibrium
    D
    when the activation energy of reaction is less

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    Define order of reaction. Write the condition under which a bimolecular reaction follows first order kinetics.

    Give one example of first order reaction.

    (a)The rate constants of a reaction at 500 K and 700 K are 0.02 s^(-1) and 0.07 s^(-1) respectively. Calculate the value of Ea. (b) Under what condition a bimolecular reaction behaves kinetically first order reaction ?

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