Question

The rate law for the reaction, A + B → Product, is: \[ {rate} = [A][B]^{3/2} \] The total order of the reaction is:

• A. 3
• B. 2.5
• C. 3.5
• D. 1.5
• E. 2

Hint:

The total order of a reaction is the sum of the powers of the concentrations of the reactants in the rate law.

Answer 1

The Correct Option is B

The total order of a reaction is the sum of the exponents in the rate law. In this case, the rate law is: \[ {rate} = [A]^1 [B]^{3/2} \] The order with respect to \(A\) is 1, and the order with respect to \(B\) is \( \frac{3}{2} \). 
Therefore, the total order is: \[ 1 + \frac{3}{2} = 2.5 \]