Three compounds were identified at a hazardous waste site. There is concern that

Question

Three compounds were identified at a hazardous waste site. There is concern that drinking water wells in a neighboring community 60 km down gradient may be threatened by these compounds. The compounds and some relevant properties about the site are given below: a The compound that is least soluble in water is a. Chlorobenzene b. Atrazine c. DDT d. None of the above b) The compound that will take the most time to show up at the wells is a. Chlorobenzene b. Atrazine c. DDT d. None of the above The compound that will show up the fastest at the wells is a. Chlorobenzene b. Atrazine c. DDT d. None of the above c) Calculate the time in years it will take Atrazine to show up at the wells.

Explanation / Answer

a) Solubility of compounds in water at 20 Deg C temperature are

Chlorobenzene = 0.5 gm/Ltr

Atrazine = 0.033 gm/Ltr

DDT= 20 gm/Ltr

Therefore Atrazine's solubility is lowest in water.

Hence option is (b)

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