A substance, A, decomposes according to zero-order kinetics from an initial concentration of 1.90 M to 0.420 M in 85.2 seconds. What is the value of rate constant, k?

0.0174 mols-1

Explanation:

In a zero order reaction, the rate of reaction is independent of the concentration of species. This implies that reaction rate does not change with increase or decrease of reactant concentration. This also means that the rate of reaction is equal to the rate constant. The integrated rate law of a zero order reaction gives the formula stated in the answer attached which also was applied to obtain the rate constant