CBSE Class 12 Chemistry Chemical Kinetics Worksheet

Read and download free pdf of CBSE Class 12 Chemistry Chemical Kinetics Worksheet. Download printable Chemistry Class 12 Worksheets in pdf format, CBSE Class 12 Chemistry Unit 4 Chemical Kinetics Worksheet has been prepared as per the latest syllabus and exam pattern issued by CBSE, NCERT and KVS. Also download free pdf Chemistry Class 12 Assignments and practice them daily to get better marks in tests and exams for Class 12. Free chapter wise worksheets with answers have been designed by Class 12 teachers as per latest examination pattern

Unit 4 Chemical Kinetics Chemistry Worksheet for Class 12

Class 12 Chemistry students should refer to the following printable worksheet in Pdf in Class 12. This test paper with questions and solutions for Class 12 Chemistry will be very useful for tests and exams and help you to score better marks

Class 12 Chemistry Unit 4 Chemical Kinetics Worksheet Pdf

 XII - Chemistry

Chemical Kinetics

CBSE SECTION

SECTION - 1

VERY - SHORT - ANSWER QUESTION
 
1. Define the term rate of reaction.
 
2. Define the term ‘Rate Constant’.
 
3. What is meant by half life period for zero order?
 
4. Write an expression for the half life period of a first order reaction.
 
5. Write the definition of instantaneous rate of reaction.
 
6. What is Boltzmann factor?
 
7. What are the factors which affect the rate of a reaction?
 
8. When could order and molecularity of a reaction be same?
 
9. After five half-life period for a first order reaction what fraction of reaction remains.
 
10. How much percentage of average kinetic energy increase when temperature increase by 10 K?
 
11. what is a complex reaction?
 
12. Write the relationship between rate constant and activation energy of a reaction.
 
13. When does the averge rate of reaction become equal to instantaneous rate?
 
14. Why diamond does not change into graphite for years, although graphite the more stable than diamond. Why?
 
15. Some times the colliding molecule have energy more than threshold energy but still the reaction does not occur. Why?
 
16. Give the relationship between the half life period of a reaction and its initial concentration for a reaction of nth order.
 
17. What is meant by half life period for a reaction?
 
18. Among the elementary processes, in the proposed mechanism of reaction, which is rate-determining step?
 
19. Give one example of the reaction having fractional value of order.
 
20. Mention one example of zero order reaction.
 
21. In which order of reaction, rate of reaction become equal to specific reaction rate?
 
22. The reaction A + B  →  2C obeys rate equation : Rate = k[A]1/2 [B]3/2 . What is overall order of reation?
 
23. The reactionA + B  →  C has zero order. Write rate equation.
 
24. Give units of specific rate constant for a zero order reaction.
 
25. Rate constant for a reaction is 1.85 × 102 s–1. Give the order of reaction.
 
 
SHORT - ANSWER - QUESTIONS
 
1. Write units of rate constant for the following reactions, if concentration is expressed in molarity and time in seconds: (i) Zero order reaction, (ii) First order reaction.
 
2. What is meant by a pseudo first order reaction? Write one example.
 
3. Is rate constant in zero order depend on the initial concentration?
 
4. Write the difference between molecularity and order of reaction?
 
5. For expresion t1/2 =1/[Aº ]  , what is order of reaction?
 
6. For the reaction 2 2 3 N (g) 3H (g)2NH (g) , express the order of reaction, when concentration is
 
(i) low (ii) high.
 
7. Give two points of difference between reaction rate and reaction constant?
 
8. What is temperature coefficient?
 
9. How is rate of reaction related to concentration of the reactants?
 
10. What is the effect of concentration on the decomposition of NH3 regarding order of reaction?
 
11. What are pseudo uni-molecular reactions? Give two examples.
 
12. List the factors which affect the rate of reaction.
 
13. List two differences between rate of reaction and reaction rate constant.
 
14. What is difference between the average rate and instantaneous rate of a chemical reaction.?
 
15. How a catalyst increases the rate of reaction?
 
LONG - ANSWER - QUESTIONS
 
1. List two methods that can be used to determine the order of a reaction. Discuss one of them.
 
2. Derive the equation for rate constant of a first order reaction.
 
3. Explain the collision theory.
 
4. Define activation energy and explain the temperature dependence of the reaction rate on its basis.
 
5. State the role of activated complex in a relation and state its relation with activation energy.
 
6. Derive an expression for the rate constant and half life period of a zero order reaction.
 
7. On what factor does the potential energy of the interacting molecules depend as per the transition state theory of mechanism of reaction be same?
 
8. How will you find order of a reaction by Ostwald isolation method?
 
9. Define the following
 
(i) Rate law, (ii) Threshold energy, (iii) Activation energy
 
10. How will you determine the order of a reaction by integrated rate law method? Give the significance of integrated rate equation.




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CBSE Class 12 Chemistry Unit 4 Chemical Kinetics Worksheet

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