5.2.2 - k (the Rate Constant)
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Practice Questions
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What does the rate constant (k) indicate about a reaction?
💡 Hint: Think about the relationship between reaction speed and reactant amounts.
Is there a fixed unit for k?
💡 Hint: Consider how the units of rate must match.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the main purpose of the rate constant (k)?
💡 Hint: Think about its role in the rate expression.
True or False: The unit for the rate constant is always mol/dm³/s.
💡 Hint: Consider how different orders might yield different units.
1 more question available
Challenge Problems
Push your limits with advanced challenges
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.
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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