A first order reaction takes 16 minutes for it's 50 % completion. What fraction that would react in 32 minutes from the beginning?

Step-by-step solution

For a first order reaction, the half-life is given as t_ 1/2 = 16 minutes. The time given is t = 32 minutes. The number of half-lives is n = t t_ 1/2 = 32 16 = 2 . The fraction of the reactant remaining after n half-lives is 1 2^n . Fraction remaining = 1 2^2 = 1 4 . The fraction of the reactant that has reacted is 1 - 1 4 = 3 4 . Answer: 3/4