Chemical Kinetics Question 147
Question: The half life of a first order reaction is 10 minutes. If initial amount is $ 0.08,mol/litre $ and concentration at some instant is $ 0.01,mol/litre $ , then $ t= $ [Roorkee 1990]
Options:
A) 10 minutes
B) 30 minutes
C) 20 minutes
D) 40 minutes
Show Answer
Answer:
Correct Answer: B
Solution:
$ 0.08mol{l^{-1}} $ to $ 0.01mol{l^{-1}} $ involves 3 half-life. So the $ t $ is 30 minutes
