Chemistry - Chemical Kinetics Question with Solution | TestHub
Assume that the reaction considered here homogeneous gaseous reaction :
List - I (Containing order of the reaction) | List - II (Containing properties of the reaction) |
|---|---|
(P) Order less than 1 | (A) Reaction will not undergo 100% completion in finite time interval |
(Q) Order equal to zero | (B) Rate of reaction will remain uniform as long as reactant is remaining |
(R) Order greater than or equal to 1 | (C) Rate of reaction may increase as the reaction proceeds |
| (D) Reaction can never be elementary |
Options:
Answer:
Solution:
The reaction is .
P: Order less than 1 (e.g., negative or fractional order). The rate of reaction, , where . If is negative, as [A] decreases, the rate increases. Thus, (P) matches (C) as well as (D).
Q: Order equal to zero. . The rate is constant as long as reactant is present. Thus, (Q) matches (B) as well as (D).
R: Order greater than or equal to 1. For , the concentration approaches zero asymptotically, meaning 100% completion is never achieved in a finite time. Thus, (R) matches (A).
Final Answer: P C,D; Q B,D; R A.
