Page 1 :
SREE SARAVANA NIKETAN MATRIC HR .SEC, SCHOOL, NERINJIPETTAI, ERODE (DT), , CLASS: XII- STD SUBJECT: CHEMISTRY, PART-I 3x2=6, , 1. What is an elementary reaction? Give the differences between, order and molecularity of a reaction., 2. Explain the rate determining step with an example., , 3. Define average rate and instantaneous rate ., PART- I 3x3=9, , 4. Explain pseudo first order reaction with an example, , 5. The rate constant for the first order reaction is 1.54«107 s!, , 6. The rate constant of a reaction at 400 and 200K are 0.04 and, 0.02s"! respectively. Calculate the value of activation energy., , PART- Ii 1x5=5, , 7. A) Derive the integrated rate law for first order with 3, examples., Or, B) Derive time depended Arrhenius equation to relate rate, , constant k1 and k2.