What is the reaction constant if the initial concentration of a contaminant is 100 mg/L, and its final concentration is 10 mg/L after a period of 2 hours and the reaction is characterized bya) Zero Order Kinetics

the reaction constant will be k = 45 mg / (L*h)

Explanation:

if the reaction follows a zero order kinetics, then the reaction rate is independent of the concentration and remains constant = k. Then we can take any changes in the concentration to calculate the reaction constant k

k = (final concentration - initial concentration) / Time = (100 mg/L - 10 mg/L) / 2 hours = 45 mg / (L*h)

k = 45 mg / (L*h)