Q126 / 200 · MHT CET - Medical 2026 (24 April Shift 1) · Chemistry
For the reaction, $\text{NO}_{2(g)}+\text{CO}_{(g)}\rightarrow\text{NO}_{(g)}+\text{CO}_{2(g)}$ the rate expression is found to be: rate $=k[\text{NO}_2]^2$. What is the order of reaction with respect to CO?
- A$2$
- Correct answerB$0$
- C$1$
- D$1/2$
Solution
The given rate law is: rate $= k[\text{NO}_2]^2$
This can be written as: rate $= k[\text{NO}_2]^2[\text{CO}]^0$
The power of the concentration of CO in the rate law is $0$.
Therefore, the order of the reaction with respect to CO is $0$.
Answer: $0$
This can be written as: rate $= k[\text{NO}_2]^2[\text{CO}]^0$
The power of the concentration of CO in the rate law is $0$.
Therefore, the order of the reaction with respect to CO is $0$.
Answer: $0$
Hence, the correct answer is option: 'B'.