Integrated Rate Equations covering Zero Order, First Order,

 15 questions (without answers) based on Integrated Rate Equations covering Zero Order, First Order,

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🧪 Integrated Rate Law – Important Questions (Class 12)

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🔷 Zero Order Reactions

1. Write the integrated rate law expression for a zero-order reaction.

2. What is the unit of the rate constant for a zero-order reaction?

3. Derive the expression for the time required to complete a zero-order reaction.

4. For a zero-order reaction, if the initial concentration is 0.4 mol/L and the rate constant is 0.02 mol L⁻¹ s⁻¹, calculate the time for the reaction to complete.

5. Sketch the graph of [R] vs. time for a zero-order reaction.

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🔷 First Order Reactions

6. Write the integrated rate law for a first-order reaction.

7. Derive the formula to calculate the rate constant using the integrated rate law of a first-order reaction.

8. What is the unit of the rate constant for a first-order reaction?

9. For a first-order reaction, if the initial concentration is 1.0 mol/L and after 30 minutes it becomes 0.125 mol/L, calculate the rate constant.

10. A reaction is 75% complete in 60 minutes. What is the half-life of the reaction if it is first-order?

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🔷 Pseudo First Order Reactions

11. Define a pseudo first-order reaction with a suitable example.

12. Why is the hydrolysis of ethyl acetate in water considered a pseudo first-order reaction?

13. How can we experimentally identify whether a reaction follows pseudo first-order kinetics?

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🔷 Half-Life (t½) Based

14. Derive the expression for the half-life of a first-order reaction.

15. The half-life of a first-order reaction is 30 minutes. What fraction of the reactant remains after 2 hours?