Question 1
In the first-order, reaction A → products, [A] = 0.400 M initially and 0.250 M after 15.0 min, what is the half-life of the reaction?
◦ 22.1 min
◦ 63.9 min
◦ 9.62 min
◦ 51.0 min
◦ 15.0 min
Question 2
In the first-order, reaction A → products, [A] = 0.400 M initially and 0.250 M after 15.0 min, at what time will [A] = 0.200 M?
◦ 63.9 min
◦ 22.1 min
◦ 9.62 min
◦ 51.0 min
◦ 15.0 min