CBSE Class 12 Chemistry - Chemical Kinetics Notes and Questions

Scroll down to download pdf file

 

CBSE Class 12 Chemistry Questions and basic easy to learn concepts/ notes Database for chapter Chemical  Kinetics . Based on CBSE and CCE guidelines. The students should practice these Questions to gain perfection which will help him to get more marks in CBSE examination. Based on CBSE and CCE guidelines. The preparation should be in a manner which helps the students to concentrate more in areas which carry more marks. Please refer to more CBSE Class XII sample papers, question papers, HOTs etc in other links.

UNIT-4

 

CHEMICAL KINETICS

 

CONCEPT

 

Thermodynamics helps us to predict the feasibility of chemical reaction by using ∆G as parameter but it cannot tell everything about the rate of reaction. Rate of chemical reaction is studied in another branch of chemistry called Chemical Kinetics.

Chemical kinetics- The branch of physical chemistry which deals with the study of rate of reaction and their mechanism is called chemical kinetics.

 

Rate of chemical reaction-  The change in concentration of any reactant or product per unit time is called rate of reaction.

 

TYPES OF RATE OF REACTION-

 

  1. Average rate of reaction- The rate of reaction measured over the long time interval is called average rate of reaction.

                                

                                    Avg rate ∆x/∆t = -∆[R]/∆t = +∆[p]/∆t

 

  1. Instantaneous rate of reaction- The rate of reaction measured at a particular time is called instantaneous rate of reaction.

                

                                    Instantaneous rate dx/dt= -d[R]/dt=+d[P]/dt

 

FACTORS AFFECTING RATE OF REACTION-

 

  1. Concentration of reactant
  2. Surface area
  3. Temperature
  4. Nature of reactant
  5. Presence of catalyst
  6. Radiation

 

RATE CONSTANT (k)- It is equal to the rate of reaction when molecular concentration of reactant is at unity.

 

RATE LAW- The rate of reaction is directly proportional to the product of concentration of reactant and each concentration is raised to some power which may or may not be equal to stereochemistry experimentally.


Please refer to the attached file for CBSE Class 12 Chemistry - Chemical  Kinetics Notes and Questions

Tags: 


Click on the text For more study material for Chemistry please click here - Chemistry

Latest CBSE News

  • CBSE has issued the following circular regarding celebrating World Environment Day: World Environment Day is celebrated on June 5 every year. This year India is hosting the World Environment Day 2018 at global level in collaboration with UN Environment on the theme “Plastic Pollution" You are, therefore, requested to sensitize students by organizing awareness programmes on environmental...
  • For awarding the grades, the Board shall put all the passed students in a rank order and will award grades as follows: · A-1 Top 1/8th of the passed candidates· A-2 Next 1/8th of the passed candidates· B-1 Next 1/8th of the passed candidates· B-2 Next 1/8th of the passed candidates· C-1 Next 1/8th of the passed candidates· C-2 Next 1/8th of the passed candidates· D-1 Next 1/8th of the passed...
  • CBSE has issued circular explaining the details regarding re evaluation process for class 12 and class 10. Read the details below.. 1. Verification of Marks a)  Request for verification can be submitted only online from website of CBSE  www.cbse.nic.in along with fee of Rs.500/- per subject as per schedule given in Annexure-I. b)  In case applying from India the requisite fee of Rs.500/- per...
  • Honourable Prime Minister Shri Narendra Modi ji said "It is our responsibility to ensure that the right spirit of yoga is conveyed to everyone." To promote wellbeing and awareness about Yoga amongst students, the Ministry of Human Resource Development (MHRD) through National Council of Educational Research and Training (NCERT) is taking multi-dimensional initiative to promote Yoga in curriculum...
  •  The government of Delhi has instructed 575 schools to return excess fees charged from parents with 9% interest. The list of the 575 schools is as under. Also, the notice issued by the govt says " In  continuation of orders dated 22.02.2018, 03.07.2017, 01.07.2016, 15.03.2016, 20.10.2015, 21.10.2014 and 28.02.2013 and in  exercise of the powers conferred under  rule   SO(xviii)  j  Section  24(3...
  • Its expected that CBSE will release the results for class 10and class 12 board exams by end of next week. The results will be declared by many mediums so that students across the country don’t face any issues regarding accessibility to results due to sudden pressure on CBSE results website like previous years. The Central Board of Secondary Education's CBSE Class 12th result 2018 and CBSE Class...