The half-life for the zero order reaction A → Products is 276 s. What is the value of the rate constant for the reaction if the initial concentration of A is 0.459?

Answer 1

For a zero order reaction, t_1/2 = [A]₀ / 2k

t_1/2 = 276 s

[A]₀ = 0.459 M (? you didn't specify units of concentration)

276 s = 0.459 M / 2k

2k = 0.459 M / 276s = 0.00166 Ms^-1

k = 0.000832 M^s-1 = 8.32x10^-4 Ms^-1