Question

[A] → [B]
Reactant Product
If formation of compound [B] follows the first order of kinetics and after 70 minutes the concentration of [A] was found to be half of its initial concentration. Then the rate constant of the reaction is x × 10–6 s–1. The value of x is _________. (Nearest Integer).

Answer 1

A → B
Reactant Product
$k = \frac{0.693}{70×60}$
= 165 × 10-6 s-1
∴ x = 165