Why did the switch to Flint\'s river water cause the water catastrophe? Because

Question

Why did the switch to Flint's river water cause the water catastrophe? Because Flint's river water has a) high pH b) high alkalinity c) high solubility of Pb_3(PO)_2 d) high O_2 concentration e) all of the above f) none of the above The level of free chlorine (used as disinfectant) decreased in treated Flint's river water due to a a) formation of a Passivation layer b) exposed iron pipe c) increased E coli population d) increased sulfate concentration d) all the above f) none of the above The treated Flint river water's corrosiveness is contributed by the concentration of a) chloride b) magnesium c) aluminum d) sodium e) phosphorus f) all of the above The researchers joined copper pipes with lead solder and then placed the pieces in either treated Flint River water or treated Detroit water. After five weeks, the level of () in the Flint water leached 16 times as much as that in the Detroit water. Fill the (). a) E. coil b)pH c) alkalinity lead d) lead e) copper f) Redo potential The entire Flint water crisis could have been avoided if the city had just added a) sulfate b) c) d) organic phosphorus e) all of the above f) none of the above

Explanation / Answer

1) c, because it is mainly due to high levels of lead concentration

2)b

3)a

4)d

5)d, because absence of orthophosphate causes low ph which result in leaching high levels of lead from pipes .

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