A32,3. Solution to Chemistry Problem #11051
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Product description
The herbicide, cotoran, was extracted from 100.00 ml of wastewater with chloroform. The extract was evaporated, transferred to a cuvette and titrated at 290 nm with an acetic acid solution of HClO4 T(HClO4/cotoran) = 0.0003000 g/ml. Calculate the concentration of mg/l cotoran in water based on the following results:
Option 3
Optical density of the solution after adding HClO4
0.0 ml 0.4 ml 0.8 1.2 1.6 2.0 2.4 2.8
0.375 0.335 0.300 0.265 0.225 0.190 0.155 0.125 0.100 0.085 0.070
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