Question
Chemistry Question on Chemical Kinetics
A first order reaction has a specific reaction rate of 10–2 s–1. How much time will it take for 20 g of the reactant to reduce to 5 g?
A
238.6 second
B
138.6 second
C
346.5 second
D
693.0 second
Answer
138.6 second
Explanation
Solution
The correct option is (B): 138.6 second.