8. In 30 minutes, a first-order reaction is 50% complete. Calculate the amount of time it took to complete 87.5 percent of the reaction. a) 30 minutes b) 60 minutes c) 90 minutes d) 120 minutes
first order reaction This means the half-life of the reaction is 2 hours which is constant. Half-life is constant in the first order reaction. Hence, the order of the reaction is 1.
