Half-life period of a first order reaction is 10 min. What percentage of the reaction will be completed in 100 min?

First order reaction, we can use 0 1 2 1 Total time Number of half-lives 2 n tA A n t 100 10 0 1 2 tA A 10 0 10 1 2 1 2 t t A A A Amount reacted = 0 0 10 2 A A , Since the value is very high we can say 99.9% has reacted.