The herbicide dichlobenil (2,6-dichlorobenzonitrile, C7H3Cl2N) has a solubility
ID: 875820 • Letter: T
Question
The herbicide dichlobenil (2,6-dichlorobenzonitrile, C7H3Cl2N) has a solubility of 18.0 mg/L by mass in water at 20 ?C. The herbicide disintegrates with a half-life (first order) of 1.00 year. Suppose that 297 kg of dichlobenil is applied in the fields surrounding a 7.50-acre pond having an average depth of 3.00 ft. Suppose further that half of the dichlobenil permeates into the pond and that this happens within a few days. Assume that the density of the pond water is 1.00 g/mL
ppm 5.35
How long would it take for the dichlobenil concentration in the pond to drop to 1.00 ppm following this single application?
Once the pond becomes saturated in dichlobenil, how many molecules of the herbicide will be dissolved per liter of pond water?
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