Question

For a reaction, A + B → Product; the rate law is given by, r = k[A]1/2 [B]2. What is the order of the reaction?

Answer 1

Answer:

2.5

Explanation:

order = sum of power to which concentration of

the reactants are raised

= 0.5+2

Answer 2

Answer:

2.5

Explanation:

The order of any reaction with respect to any given substance is equal to its exponent or index  to which its concentration term is raised

According to the rate law expression rate = k[A] x [B]y and

the order of the reaction will be x +y

Where k is the rate constant , A is the concentration of reactant A with the power raised by its coefficient and B is the is the concentration of reactant B with the power raised by its coefficient and

Thus, as per  the given problem

order = 1/2+2

= 5/2

= 2.5