Answer:
It will take 77.8 seconds for 95% of sample to react
Explanation:
As the given reaction obeys 1st order therefore-
Where is the concentration of after "t" time, is the initial concentration of and is half life
Here, and
So,
or,
So, it will take 77.8 seconds for 95% of sample to react
Positive Acceleration refers to the force acting on an object whose speed increases as it moves away from its original starting position. If the velocity is increasing along with time it is called positive acceleration, and if the velocity decreases it is negative acceleration.