Chemical Kinetics Question 154
Question: The rate constant of a first order reaction whose half-life is 480 seconds, is [MP PET 1999]
Options:
A) $ 2.88\times {10^{-3}}{{\sec }^{-1}} $
B) $ 1.44\times {10^{-3}}{{\sec }^{-1}} $
C) $ 1.44,{{\sec }^{-1}} $
D) $ 0.72\times {10^{-3}}{{\sec }^{-1}} $
Show Answer
Answer:
Correct Answer: B
Solution:
$ {t_{1/2}}=\frac{0.693}{k},k=\frac{0.693}{480}=1.44\times {10^{-3}}{{\sec }^{-1}} $ .
