A chemical mixtrue of cis and trans 1,3-dichloropropene is extensively used in a

Question

A chemical mixtrue of cis and trans 1,3-dichloropropene is extensively used in agriculture as a soil fumigant to control nematodes, which are plant parasites. You have been hired as a consultant to assess the feasibility of various strategies to remidate soil that has been extensively contamindated with cis-1,3-dichloropropene. Excavating the contamindated soil to incerate it appears to be prohibitively expensive. You decide to explore the pump and treat technique- you flood the soil with water, allow the system to reach equilibrium, and then pump out the contaminated water. At equilibrium, you measure the concentration of cis-1,3-dichloropropene in water to be at 375ppm (mg/L).

soil characteristics: pH =5.0, porosity = 0.3, mineral (particle) density = 2.5 g/cm3, sand content = 70% by weight, Clay content = 20% by weight, organic carbon = 2.5% by weight, oxide content= 5% by weight, "other" content = 2.5% by weight

Cis-1,3-dichloropropene C3H4Cl2, Mw: 110.97 g/mol, logKow: 2.06, KH: 2.71 atm L/mol, vapor pressure: 0.035 atm, aqueous solbuility: 0.02 M, melting point: -50 C, boiling point 104.3C

A. after the flooded soil has reached equilibrium, but prior to pumping, what is the concentration of cis-1,3-dichloropropene associated with the soild matrix? Please provide a quantitavie answer in units oif mol/kg of soild.

B. what would chemcial activity be in a worm equilibrated with this soil?

Explanation / Answer

A)

density=1.22Kg/L

0.355g/L/110.97 g/mol=0.0032mol/L/1.22Kg/L=0.0026 mol/kg

B)

missing data

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