Question detail
What does the rate equation for a reaction indicate about the relationship between reactant concentration and reaction rate?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Rate equations (A-level only)
Question
- A. It shows that reaction rate is directly proportional to the concentration of all reactants.
- B. It indicates that the reaction rate depends on the concentration of only the reactants with the highest order.
- C. It reveals that the reaction rate is independent of reactant concentration.
- D. It suggests that the reaction rate is proportional to the concentration raised to the power of its order.
Answer
It suggests that the reaction rate is proportional to the concentration raised to the power of its order.
Explanation
The correct option explains that the rate equation quantitatively relates the rate of a reaction to the concentration of reactants raised to their respective orders. This is essential for understanding how changes in concentration affect the rate, which is a key aspect of the learning objective regarding rate equations.
Common mistake
Misinterpreting Rate Equations
Students often confuse the overall reaction equation with the rate-determining step, leading to incorrect assessments of proposed mechanisms.
To fix this, students should focus on identifying the specific step that limits the rate of the reaction and ensure they understand how it relates to the rate equation.
Related flashcards
Flashcard 1 of 5