Answer to Question #91124 in Organic Chemistry for Prashik Vishal Shinde

Question #91124
For reaction NO2 + CO→NO + CO2 takes place in 2 steps
(1) NO2 + NO2 → NO3 + NO (slow)
(2) NO3 + CO →NO2 + CO2 (fast)
Q.1 write rate law
Q.2 what is role of NO3
1
Expert's answer
2019-06-25T03:47:19-0400

Q1. Rate law for the reaction:


"\u03bd=k\u00d7[NO_2]\u00d7[CO]"

Rate law for the first step:


"v_1=k_1\u00d7[NO_2]^2"

Rate law for the second step:


"v_2= k_2\u00d7[NO_3]\u00d7[CO]"

Q2. "NO_3" plays the role if catalyst which speeds up the rection. A catalyst forms transition complex with reactants thus decreasing the activation energy, required for the reaction to procced. As less energy is required the reaction proceeds faster.



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