The rate constant of the reaction\[A\to B\]is \[0.6\times {{10}^{-3}}\]mole per second. If the concentration of A is 5 M, then concentration of B after 20 minutes is:
A) 0.36 M
B) 0.72 M
C) 1.08 M
D) 3.60 M
Correct Answer:
B
Solution :
For zero order reaction: \[x=K.t\] \[=0.6\times {{10}^{-3}}\times 20\times 60\] \[x=0.72\,M\]