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  • If the time for half reaction gets halved on doubling the initial concentration of the reactants, which among the following is the order of the reaction -   <div class='qna-

If the time for half reaction gets halved on doubling the initial concentration of the reactants, which among the following is the order of the reaction - 

 

Option: 1

Zero


Option: 2

One


Option: 3

Two


Option: 4

Three


Answers (1)

best_answer

Half-time of a reaction \mathrm{t_1/_2= [Ao]^{1-n }}  where Ao is initial concentration of reactant and n is order of reaction with respect to that reactant.

Since, the time for half reaction gets halved on doubling the initial concentration of the reactants, half-time is inversely proportional to intial concentration.

\begin{aligned} & \Rightarrow 1-n=-1 \\ & \Rightarrow n=2 \end{aligned}

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