Question

The rate constant for a zero order reaction A → P is 0.0030 mol L⁻¹s⁻¹. How long will it take for the initial concentration of A to fall from 0.10 M to 0.075 M?

Answer 1

Given: K = 0.0030 mol L⁻¹s⁻¹

[A₀] = 0.10 M

[A] = 0.075 M

Formula: K = `([A_0] - [A])/t`

`0.0030 = (0.10 - 0.075)/t`

`0.0030 = 0.025/t`

∴ `t = 0.025/0.0030`

∴ t = 8.33 sec