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Q.

For the reaction 

\large {H_2} + B{r_2}\, \to \,2HBr

, the rate expression is, rate = K [H2][Br2]1/2  which statement is true about this reaction 

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a

Order of the reaction is 3/2

b

The reaction is of second order    

c

The unit of K is sec-1

d

Molecularity of the reaction is 2

answer is B.

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Detailed Solution

Rate=H2Br212

Sum of the powers in the rate law =

1 + \frac{1}{2} = \frac{3}{2} = order

 

 

 

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