The value of the rate constant of a pseudo fi | vedclass

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(C) pseudo first order reaction is a reaction that appears to be of first order but is actually of a higher order. In such reactions,one of the reacta

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Depends on the concentration of reactants present in excess

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(C) pseudo first order reaction is a reaction that appears to be of first order but is actually of a higher order. In such reactions,one of the reactants is present in a large excess,so its concentration remains effectively constant throughout the reaction. The rate constant $(k')$ of a pseudo first order reaction is defined as $k' = k[B]$,where $[B]$ is the concentration of the reactant present in excess. Therefore,the rate constant depends on the concentration of the reactant present in excess.

The value of the rate constant of a pseudo first order reaction:

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For a zero order reaction,will the molecularity be equal to zero? Explain.

Which of the following statements is correct?

$A$ substance undergoes first-order decomposition. The decomposition follows two parallel first-order reactions as:
$A \xrightarrow{k_1} B$ $k_1 = 1.26 \times 10^{-4} \ s^{-1}$
$A \xrightarrow{k_2} C$ $k_2 = 3.8 \times 10^{-5} \ s^{-1}$
The percentage distribution of $B$ and $C$ are:

Assertion: The order of a reaction can have a fractional value.
Reason: The order of a reaction cannot be determined from the balanced chemical equation of a reaction.

The rate law equation for a reaction between $A$,$B$ and $C$ is $r = k[A][B][C]^2$. What will be the new rate of reaction if the concentration of both $A$ and $B$ are doubled (in $r$)?

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