Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does the rate constant (k) indicate about a reaction?
💡 Hint: Think about the relationship between reaction speed and reactant amounts.
Question 2
Easy
Is there a fixed unit for k?
💡 Hint: Consider how the units of rate must match.
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Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the main purpose of the rate constant (k)?
- To calculate energy
- To link reaction rate to concentrations
- To determine the temperature
- To find the pressure
💡 Hint: Think about its role in the rate expression.
Question 2
True or False: The unit for the rate constant is always mol/dm³/s.
- True
- False
💡 Hint: Consider how different orders might yield different units.
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Challenge Problems
Push your limits with challenges.
Question 1
For the reaction 2A + B → Products, we have rates data showing: 1. [A] = 0.1 M, [B] = 0.1 M, Rate = 1.0×10^-3 M/s; 2. [A] = 0.2 M, [B] = 0.1 M, Rate = 2.0×10^-3 M/s. Determine the rate constant k if it's first order with respect to A and second with respect to B.
💡 Hint: Break it down step-wise, and remember to substitute values carefully based on the data.
Question 2
Discuss how changing the concentration of product B would affect the overall reaction rate for a zero-order reaction.
💡 Hint: Reflect on the definition of zero-order reactions.
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