What is the concentration of A after 29.1 minutes for the reaction A → Products when the initial concentration of A is 0.750 M? (k = 0.0451 M⁻¹min⁻¹)

Answer 1

From the units of the rate constant, M-min-1, we can tell the reaction is 2nd order

Integrated rate equation for 2nd order is 1/[A] = 1/[A]_o + kt

Solve for [A] when t = 29.1 min

1/[A] = = 1/0.750 + (0.0451)(29.1) = 1.33 + 1.31

1/[A] = 2.64

[A] = 0.379 M