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Practice Assignment: Class 12 Chemistry Unit 3 Chemical Kinetics
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9. What will be the order of reaction, if the rate of reaction does not depend on the concentration of any of the reactant.
10. For the elementary step of a chemical reaction :
H2 + I2 2HI
rate of reaction [H2] [I2]
What is the (i) molecularity and (ii) order of the reaction.
[Ans. : (i) 2 (ii) 1]
11. For a chemical reaction A B. The rate of the reaction is given as Rate = k [A]n, the rate of the above reaction quadruples when the concentration
of A is doubled. What is the value of n?
[Ans. : n = 2]
12 Mention one example of zero order reaction.
13. What is the value of the order of reaction of radioactive decay?
[Ans. : First order]
*14. A reaction is 50% complete in 2 hours and 75% complete in 4 hours. What is the order of reaction?
Ans : [First order]
15. Suggest an appropriate reason for the observation : “On increasing temperature of the reacting system by 10 degrees, the rate of reaction
almost doubles or even sometimes becomes five folds.”
*16. For a chemical reaction, activation energy is zero and at 300K rate constant is 5.9 × 10–5 s–1, what will be the rate constant at 400K?
[Ans. : 5.9 × 10–5 s–1]
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Chapter Assignment & Practice Material for Class 12 Chemistry Unit 3 Chemical Kinetics
Download Assignment: Unit 3 Chemical Kinetics (Class 12 Chemistry)
Download curated Unit 3 Chemical Kinetics assignments aligned with current CBSE standards for Class 12. Built for comprehensive practice, the sheets incorporate MCQs, short answer questions, and long-form problems for Unit 3 Chemical Kinetics. Save files easily in PDF format for offline use. Compiled by experienced educators, these tasks provide exact alignment with recurring school examination patterns.
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How to Approach Chemistry Unit 3 Chemical Kinetics Assignments
- Initial Reading: Begin by reading the NCERT book for Class 12 Chemistry to build a baseline understanding.
- Independent Testing: Attempt the Unit 3 Chemical Kinetics questions unassisted, then verify your work using our provided answer keys.
- Supplementary Aids: Leverage our Revision Notes and Class 12 worksheets to clarify complicated sections.
- Mistake Management: Keep a log of tricky points and review them regularly through online MCQ practice.
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