Question

Half life period of a first-order reaction is 1386 seconds. The specific rate constant of the reaction is :
(a) 0.5 × 10⁻² s⁻¹
(b) 0.5 × 10⁻³ s⁻¹
(c) 5.0 × 10⁻² s⁻¹
(d) 5.0 × 10⁻³ s⁻¹

Answer 1

the answer is option "b"