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Multiple Choice
What is the rate law for the following elementary reaction: ClO(g) + O(g) → Cl(g) + O2(g)?
A
Rate = k[ClO]^2
B
Rate = k[ClO][O2]
C
Rate = k[O]^2
D
Rate = k[ClO][O]
Verified step by step guidance
1
Identify that the given reaction is an elementary reaction: ClO(g) + O(g) → Cl(g) + O2(g). In elementary reactions, the rate law can be directly determined from the stoichiometry of the reactants.
Recognize that the rate law for an elementary reaction is based on the molecularity of the reaction, which is the number of reactant molecules involved in the step.
For the reaction ClO(g) + O(g) → Cl(g) + O2(g), there is one molecule of ClO and one molecule of O involved, making it a bimolecular reaction.
Write the rate law for the reaction based on the stoichiometry: Rate = k[ClO][O]. This indicates that the rate is proportional to the concentration of ClO and O, each raised to the first power.
Understand that the rate constant 'k' is specific to the reaction and conditions, and it is determined experimentally. The rate law shows how the rate depends on the concentration of the reactants.