For each of the scenarios, identify the order with respect to the reactant, A. A⟶products The half‑life of A increases as the initial concentration of A decreases. order: A three‑fold increase in the initial concentration of A leads to a nine‑fold increase in the initial rate. order: A three‑fold increase in the initial concentration of A leads to a 1.73‑fold increase in the initial rate. order: The time required for [A] to decrease from [A]0 to [A]0/2 is equal to the time required for [A] to decrease from [A]0/2 to [A]0/4. order: The rate of decrease of [A] is a constant. order: