Chemical Kinetics Question 317
Question: The rate constant of a zero order reaction is $ 2.0\times {10^{-2}}mol,{L^{-1}}{s^{-1}} $ . If the concentration of the reactant after 25 seconds is 0.5 M. What is the initial concentration-
Options:
A) 0.5 M
B) 1.25 M
C) 12.5 M
D) $ 1.0,M $
Show Answer
Answer:
Correct Answer: D
Solution:
[d] For a zero order reaction Rate constant = $ k=\frac{a-x}{t} $
$ 2\times {10^{-2}}=\frac{a-0.5}{25} $
$ a-0.5=0.5 $
$ a=1.0M $
