What is the half-life for a particular reaction if the rate law is rate = (1281 M*min⁻¹)[A]⁰ and the initial concentration of A is 0.250 M?

Answer 1

From the rate law, we can tell that the reaction is zero order. We can tell this both from the units of the rate constant (M/min) and from the fact the the concentration of A is raised to the zero power.

For a zero order reaction, the half life, t_1/2 = [A]_o / 2k = 0.250 M / 2(1281M/min)

t_1/2 = 1.5x10^-7 min