Question

Rate constant of a first-order reaction involving a compound a was found to be 0.082 per minute when the initial concentration of a is 0.15 mol per liter how long will it take for the concentration of a to drop to 0.03 mole per liter

Answer 1

The rate constant for a first order reaction was found to be

. If initial concentration of reactant is

, how long would it take: (a) to reduce the concentration of to (b) to reduce the concentration of A by