1. Tardigrade
  2. Question
  3. Chemistry
  4. The rate equation for a reaction: A arrow B is r = K[A]°. If the initial concentration of the reactant is a mol dm-3, the half life period of the reaction is

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Q. The rate equation for a reaction : $A \rightarrow B$ is $r = K[A]^\circ$. If the initial concentration of the reactant is a mol $dm^{-3}$, the half life period of the reaction is

KCETKCET 2009Chemical Kinetics

Solution:

$A \longrightarrow B$

$\because\,\,\,\,\,r=k[A]^{0}$

or $\,\,\,\,\,\,r=k$

This is a zero order reaction.

$\therefore \,\,\,\,\,t_{1 / 2}=\frac{a}{2 k}$