Given :
Concentration of product [A] = 0.371 M .
Rate constant , [tex]R = 0.761\ M^{-1}t^{-1}[/tex] .
To Find :
The rate for the reaction .
Solution :
We know , for second order reaction , rate is given by :
[tex]r=k[A]^2\\\\r=0.761\times 0.371^2\ M/t\\\\r=0.10\ M/t[/tex]
Therefore , the rate for the second order reaction is 0.1 M/t .
Hence , this is the required solution .