Chemical Kinetics Question 294
Question: Units of rate constant of first and zero order reactions in terms of molarity M unit are respectively
Options:
A) $ se{c^{-1}},M.se{c^{-1}} $
B) $ se{c^{-1}},M $
C) $ M.se{c^{-1}},se{c^{-1}} $
D) $ M,se{c^{-1}} $
Show Answer
Answer:
Correct Answer: A
Solution:
[a] For a zero order reaction. rate $ =k[ A ]{}^\circ $ i.e., rate =k hence unit of $ k=M.se{c^{-1}} $ For a first order reaction. rate $ =k[ A ] $
$ k=M.se{c^{-1}}/M=se{c^{-1}} $
