New ! Chemistry MCQ Practise Tests



  1. Home
  2. 12th Standard
  3. Chemistry
  4. 12th Standard English Medium Chemistry Subject Chemical Kinetics Book Back 3 Mark Questions with Solution Part - I

Updated 12th Standard Chemistry Study Materials 2022-2023 Exams

12th Standard English Medium Chemistry Subject Chemical Kinetics Book Back 3 Mark Questions with Solution Part - I Question Bank Software Jun-02 , 2021

QB365 provides detailed and simple solution for every Book back Questions in class 12 Chemistry Subject. It will helps to get more idea about question pattern in every book back questions with solution.

12th Standard English Medium Chemistry Subject Chemical Kinetics Book Back 3 Mark Questions with Solution Part - I

12th Standard English Medium Chemistry Subject Chemical Kinetics Book Back 3 Mark Questions with Solution Part - I

12th Standard

    Reg.No. :
  •  
  •  
  •  
  •  
  •  
  •  

Chemistry

Time : 00:30:00 Hrs
Total Marks : 15

    Part I

    5 x 3 = 15

  1. The decomposition of Cl2O7 at 500K in the gas phase to Cl2 and O2 is a first order reaction. After 1 minute at 500K, the pressure of Cl2O7 falls from 0.08 to 0.04 atm. Calculate the rate constant in s-1

  2. Explain pseudo first order reaction with an example.

  3. A gas phase reaction has energy of activation 200 kJ mol-1. If the frequency factor of the reaction is 1.6 x 1013s-1. Calculate the rate constant at 600 K.(e-40.09 = 3.8 x 10-48)

  4. A first order reaction takes 8 hours for 90% completion. Calculate the time required for 80% completion. (log 5 = 0.6989 ; log10 = 1)

  5. Show that in case of first order reaction, the time required for 99.9% completion is nearly ten times the time required for half completion of the reaction.

*****************************************

Reviews & Comments about 12th Standard English Medium Chemistry Subject Chemical Kinetics Book Back 3 Mark Questions with Solution Part - I

Write your Comment