The rate expression for a reaction is k[A]5/2[B]-1. The order of this reaction is

Explanation

The order of a reaction is the sum of the exponents of the reactant concentrations in the rate expression. However, there's a crucial point to consider when exponents are fractional:For fractional exponents, use absolute values. Fractions in exponents don't directly translate to fractional orders. Instead, take the absolute value of each exponent and add them to find the overall order.Following this rule:Order with respect to A: |5/2| = 5/2Order with respect to B: |-1| = 1Overall order: (5/2) + 1 = 3/2Therefore, the correct order of the reaction is 3/2.