Question

Which of the following is correct for a first-order reaction?

Options

• `"t"_(1//2) ∝ "a"`

• `"t"_(1//2) ∝ 1//"a"`

• `"t"_(1//2) ∝ "a"^0`

• `"t"_(1//2) ∝ 1//"a"^2`

Answer 1

`bb("t"_(1//2) ∝ "a"^0)`

Explanation:

t_1/2 is independent of initial concentration.

∴ `"t"_(1//2) ∝ "a"^0`