Answer: 28.231 seconds
Explanation:
Rate law says that rate of a reaction is directly proportional to the concentration of the reactants each raised to a stoichiometric coefficient determined experimentally called as order.
Thus overall order = 1
Expression for rate law for first order kinetics is given by:
where,
k = rate constant =
t = time taken for decomposition
a = initial amount of the reactant A =
a - x = amount left after decay process = 0.300 M
28.231 seconds will elapse before the concentration of A has fallen to 0.300 mol/liter