We are being asked to write a rate law for the reaction using the provided mechanism.
Rate law is a mathematical equation that links the rate of a chemical reaction with the concentrations of its reactants.
Rate law is written using the slow step of the reaction (also called the rate-determining step)
Recall that the rate law only focuses on the reactant concentrations and has a general form of:
k = rate constant
A & B = reactants
x & y = reactant orders
Get the overall reaction:
Cancel the intermediate species.
The mechanism for the reaction described by
NO2(g) + CO(g) → CO2(g) + NO (g)
is suggested to be
(1) 2NO2(g) →(k1) NO3(g) + NO (g) (slow)
(2) NO3(g) +CO(g) →(k2) NO2(g) + CO2(g) (fast)
Assuming that [NO3] is governed by steady-state conditions, derive the rate law for the production of CO2(g) and enter it in the space below.
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Reaction Mechanism concept. If you need more Reaction Mechanism practice, you can also practice Reaction Mechanism practice problems.