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Molecularity of Reaction

For a reactio...

Question

For a reaction: $H_{2} + C l_{2} h v \to 2 H C l$
Rate $= k$
(i) Write the order and molecularity of this reaction.
(ii) Write the unit of $k$ .

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Solution

The order of the reaction is $0$
The reaction is bimolecular in nature. Thus, the molecularity is 2.
The unit of the rate constant $k$ is $m o l L^{- 1} s^{- 1}$ or $m o l . d m^{- 3} s^{- 1}$ .

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