Practice Worked Example (5.6.3) - Module 5: Chemical Kinetics - IB 12 Chemistry

Practice: Worked Example

Lesson 5.6.3Module 5: Chemical Kinetics

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9 questions

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6 sample questions

Question 1.
If [A] is doubled and the rate of reaction does not change, what is the order with respect to A?
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Consider how changes in concentration affect the rate.
Question 2.
What unit is commonly used for the rate constant (k)?
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Review the dimensions involved in reaction rates.
3Question 3.
What is a rate expression?
- An equation relating reactants' concentration to rate.
- The same as the balanced chemical equation.
- A formula only applicable to solid reactants.
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Remember the context of rate and concentration.
4Question 4.
True or False: The rate constant is dependent on the temperature of the reaction.
- True
- False
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Think about factors affecting reaction speed.
Question 5.
Consider a reaction where the rate is found to be dependent on two reactants, A and B. If the reaction is zero order with respect to A and first order with respect to B, how does doubling [B] affect the rate?
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Focus on the definition of reaction order.
Question 6.
A student measures the rate at different temperatures and finds that at 300 K, k = 1.00 × 10^-3 s^-1, and at 310 K, k = 3.00 × 10^-3 s^-1. Determine the activation energy using the Arrhenius equation.
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Think about how to isolate Ea using the given temperatures and rate constants.

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