NCERT Solutions for Class 12 Chemistry Chapter 4 Chemical Kinetics Solution: Q 5 Mention the factors that affect the rate of a chemical reaction Solution: The factors which are responsible for the effect in chemical reaction’s rate are: (a) Reaction temperature (b) Presence of a catalyst
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[PDF] Chemistry Class 12 Chapter 4 NCERT Solution-chemical kinetics
Question 4 4: The conversion of molecules X to Y follows second order kinetics If concentration of X is increased to three times how will it affect the rate of
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Now, the rate equation will be: Rate2 = k(3a)2 = 9(ka2) Page 3 Class- XII-CBSE- Chemistry Chemical Kinetics Practice more on Chemical Kinetics Page - 3 www
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Some reactions such as ionic reactions occur very fast, for example, precipitation of silver chloride occurs instantaneously by mixing of aqueous solutions of silver
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1 fév 2021 · File Type PDF Chemical difficulty as download lead chemical Class 12 NCERT Solutions for Chemical Kinetics Chemical Kinetics is a
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NCERT Solutions Class 12 Chemistry Chapter 4 Chemical Kinetics - Download Free PDFs Chemical kinetics is the study of chemical reactions with respect to
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www ncerthelp com (Visit for all ncert solutions in text and videos, CBSE the rate of reactions and the mechanism of the reaction is called chemical kinetics
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File Type PDF Chemical Kinetics Problems And Solutions Kinetics Problems and Solutions - Free download as Word Doc ( doc / docx), PDF File ( pdf ), Text File ( txt) NCERT Solutions For Class 12 Chemistry Chapter 4 Chemical Kinetics
pdf Objectives Chemical Kinetics - NCERT
Objectives After studying this Unit you will be able to define the average and instantaneous rate of a reaction; express the rate of a reaction in terms of change in concentration of either of the reactants or products with time; distinguish between elementary and complex reactions; differentiate
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NCERT Solutions for Class 12 Chemistry Chapter 4 Chemical Kinetics Solution: Q 5 Mention the factors that affect the rate of a chemical reaction Solution: The factors which are responsible for the effect in chemical reaction’s rate are: (a) Reaction temperature (b) Presence of a catalyst
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NCERT Solutions for Class 12 Chemistry Chapter 4
Chemical Kinetics
Solution:
NCERT Solutions for Class 12 Chemistry Chapter 4
Chemical Kinetics
Solution:
NCERT Solutions for Class 12 Chemistry Chapter 4
Chemical Kinetics
Q 3. The decomposition of NH3 on platinum surface is zero order reaction. What are the rates of production of N2 and H2 if k = 2.5 × 104 mol1 L s 1?Solution:
NCERT Solutions for Class 12 Chemistry Chapter 4
Chemical Kinetics
Solution:
Q 5. Mention the factors that affect the rate of a chemical reaction.Solution:
(a) Reaction temperature (b) Presence of a catalystNCERT Solutions for Class 12 Chemistry Chapter 4
Chemical Kinetics
(c) The concentration of reactants (pressure in case of gases) (d) Nature of the products and reactants (e) Radiation exposure (f) Surface area Q 6. A reaction is second order with respect to a reactant. How is the rate of reaction affected if the concentration of the reactant is (i) doubled (ii) reduced to half?Solution:
NCERT Solutions for Class 12 Chemistry Chapter 4
Chemical Kinetics
Q 7. What is the effect of temperature on the rate constant of a reaction? How can this effect of temperature on rate constant be represented quantitatively?Solution:
Q 8. In a pseudo-first-order reaction in water, the following results were obtained: t/s 0 30 60 90 [Ester]mol / L 0.55 0.31 0.17 0.085 Calculate the average rate of reaction between the time interval 30 to 60 seconds.Solution:
NCERT Solutions for Class 12 Chemistry Chapter 4
Chemical Kinetics
Q 9. A reaction is first order in A and second order in B. (i) Write the differential rate equation. (ii) How is the rate affected on increasing the concentration of B three times? (iii) How is the rate affected when the concentrations of both A and B are doubled?Solution:
NCERT Solutions for Class 12 Chemistry Chapter 4
Chemical Kinetics
Solution:
NCERT Solutions for Class 12 Chemistry Chapter 4
Chemical Kinetics
Q 11. The following results have been obtained during the kinetic studies of the reaction:NCERT Solutions for Class 12 Chemistry Chapter 4
Chemical Kinetics
Determine the rate law and the rate constant for the reaction.Solution:
NCERT Solutions for Class 12 Chemistry Chapter 4
Chemical Kinetics
NCERT Solutions for Class 12 Chemistry Chapter 4
Chemical Kinetics
Solution:
The given reaction is of the first order with respect to A and of zero-order with respect to B.Thus, the rate of the reaction is given by,
From experiment 1, we get
From experiment 2, we get
NCERT Solutions for Class 12 Chemistry Chapter 4
Chemical Kinetics
From experiment 3, we get
From experiment 4, we get
Solution:
NCERT Solutions for Class 12 Chemistry Chapter 4
Chemical Kinetics
Solution:
NCERT Solutions for Class 12 Chemistry Chapter 4
Chemical Kinetics
Solution:
NCERT Solutions for Class 12 Chemistry Chapter 4
Chemical Kinetics
NCERT Solutions for Class 12 Chemistry Chapter 4
Chemical Kinetics
Q 16. The rate constant for a first-order reaction is 60 s1. How much time will it take to reduce the initial concentration of the reactant to its 1/16th value?NCERT Solutions for Class 12 Chemistry Chapter 4
Chemical Kinetics
Solution:
Solution:
NCERT Solutions for Class 12 Chemistry Chapter 4
Chemical Kinetics
Q 18. For a first order reaction, show that time required for 99% completion is twice the time required for the completion of 90% of reaction.Solution:
NCERT Solutions for Class 12 Chemistry Chapter 4
Chemical Kinetics
Q 19. A first-order reaction takes 40 min for 30% decomposition. Calculate t1/2.Solution:
Q 20. For the decomposition of azoisopropane to hexane and nitrogen at 543K, the following data are obtained.NCERT Solutions for Class 12 Chemistry Chapter 4
Chemical Kinetics
Calculate the rate constant.
Solution:
NCERT Solutions for Class 12 Chemistry Chapter 4
Chemical Kinetics
Q 21. The following data were obtained during the first order thermal decomposition of SO2Cl2 at a constant volume. Calculate the rate of the reaction when total pressure is 0.65 atm.Solution:
NCERT Solutions for Class 12 Chemistry Chapter 4
Chemical Kinetics
NCERT Solutions for Class 12 Chemistry Chapter 4
Chemical Kinetics
Q 22. The rate constant for the decomposition of hydrocarbons is 2.418 × 105s1 at 546 K. If the energy of activation is 179.9 kJ/mol, what will be the value of the pre-exponential factor?Solution:
NCERT Solutions for Class 12 Chemistry Chapter 4
Chemical Kinetics
ĺ2s1. Calculate the
concentration of A remaining after 100 s if the initial concentration of A is 1.0 mol L1.Solution:
Q 24. Sucrose decomposes in acid solution into glucose and fructose according to the first- order rate law, with t1/2 = 3.00 hours. What fraction of a sample of sucrose remains after 8 hours?Solution:
NCERT Solutions for Class 12 Chemistry Chapter 4
Chemical Kinetics
Solution:
NCERT Solutions for Class 12 Chemistry Chapter 4
Chemical Kinetics
Q 26. The rate constant for the first order decomposition of H2O2 is given by the following equation: Calculate Ea for this reaction and at what temperature will its half-period be 256 minutes?Solution:
NCERT Solutions for Class 12 Chemistry Chapter 4
Chemical Kinetics
Q 27. The decomposition of A into product has value of k as 4.5 × 103 s1 at 10°C and energy of activation 60 kJ mol1. At what temperature would k be 1.5 × 104s1?Solution:
NCERT Solutions for Class 12 Chemistry Chapter 4
Chemical Kinetics
Q 28. The time required for 10% completion of a first order reaction at 298K is equal to thatrequired for its 25% completion at 308K. If the value of A is 4 × 1010s-1. Calculate k at 318K and
Ea.