Question

For a reaction, A + B $\longrightarrow$ product, it is found that rate law is r = k[A]$^{1.5}$ [B]$^{2.5}$. What is the order of reaction?

• A. 1.5
• B. 2.5
• C. +1
• D. 4

Hint:

Overall Order $= n + m$ where $Rate = k[A]^n[B]^m$.

Answer 1

The Correct Option is D

Step 1: Formula
The overall order of a reaction is the sum of the powers of the concentration terms in the rate law expression.
Step 2: Calculation
Order $= 1.5 + 2.5$
Order $= 4.0$
Final Answer: (D)