In acidic medium the rate of reaction between BrO3- and Br- ions is given by the expression:

-\(\frac{d(BrO_3^-)}{dt}\) = k[BrO₃^-][Br^-][H⁺]² 

Which of the following is indicated by the above expression?

Doubling the concentration of H⁺ ions will increase the reaction rate by 4 times.

As rate of reaction is given by = -\(\frac{d(BrO_3^-)}{dt}\) = k[BrO₃^-][Br^-][H⁺]² 

it shows that rate of reaction is of 2^nd order with respect to H⁺.

Hence, Doubling the concentration of H⁺ ions will increase the reaction rate by 4 times.