Question: The rate law for a reaction is determined experimentally. Which of the following is true?
Options:
It can be derived from stoichiometry
It is always first-order
It depends on the mechanism
It is independent of temperature
Correct Answer: It depends on the mechanism
Solution:
The rate law for a reaction depends on the mechanism of the reaction.
The rate law for a reaction is determined experimentally. Which of the following
Practice Questions
Q1
The rate law for a reaction is determined experimentally. Which of the following is true?
It can be derived from stoichiometry
It is always first-order
It depends on the mechanism
It is independent of temperature
Questions & Step-by-Step Solutions
The rate law for a reaction is determined experimentally. Which of the following is true?
Step 1: Understand what a rate law is. It describes how the rate of a reaction depends on the concentration of reactants.
Step 2: Know that the rate law is determined through experiments, not just by looking at the balanced chemical equation.
Step 3: Realize that the rate law can vary based on the specific steps (mechanism) that the reaction goes through.
Step 4: Conclude that the rate law reflects the actual process of how reactants turn into products, which is influenced by the reaction mechanism.
Rate Law – The rate law expresses the relationship between the rate of a chemical reaction and the concentration of its reactants, determined experimentally.
Reaction Mechanism – The sequence of elementary steps that lead to the overall reaction, which can influence the form of the rate law.
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