Q128 / 200 · MHT CET - Medical 2026 (25 April Shift 2) · Chemistry
For a reaction $a\text{A} + b\text{B} \rightarrow$ Products, the rate law is found to be: Rate $= k[\text{A}][\text{B}]^2$. What is the overall order of the reaction?
- Correct answerA$3$
- B$2$
- C$1$
- D$0$
Solution
The rate law for the reaction is given as Rate $= k[\text{A}][\text{B}]^2$.
The overall order of a reaction is the sum of the exponents of the concentration terms in the rate law expression.
Order with respect to $\text{A} = 1$
Order with respect to $\text{B} = 2$
Overall order $= 1 + 2 = 3$
Answer: $3$
The overall order of a reaction is the sum of the exponents of the concentration terms in the rate law expression.
Order with respect to $\text{A} = 1$
Order with respect to $\text{B} = 2$
Overall order $= 1 + 2 = 3$
Answer: $3$
Hence, the correct answer is option: 'A'.