Chemical Kinetics Quiz-01

1. Two reactions R1 and R2 have identical pre-exponential factors. Activation energy of Rexceeds that of R2 by 10 kJ mol-1 . If k1 and k2 are rate constants for reactions R1 and R2 respectively at 300 K, then ln(k2/k1) is equal to (R=8.314 J mol-1K-1)

 
 
 
 

2. Higher order (>3) reactions are rare due to

 
 
 
 

3. Under the same reaction conditions, initial concentration of 1.386 mol dm-3 of a substance becomes half in 40s and 20s through first order and zero order kinetics respectively. Ratio(k1 / k0) of the rate constants for first order(k1) and zero order (k0) of the reaction is

 
 
 
 

4. If I is the intensity of absorbed light and C is the concentration of AB for the photochemical process.

AB + hv→AB*, the rate of formation of AB* is directly proportional to

 
 
 
 

5. The rate of reaction doubles when its temperature changes from 300 K to 310 K. Activation energy of such a reaction will be (R=8.314 JK-1 mol-1 and log 2=0.301)

 
 
 
 

Question 1 of 5