140. Задачка по химии №014 021

19. Using the Bouguer - Lambert - Beer equation, determine the parameter "X" (in accordance with the task number) in the specified units (Table 2).
table 2

Problem number 19
Detected ion or substance Quinoline
Reaction of colored compound formation: With orthophenanthralin FeR3

Wavelength, nm 490
ε x
Layer thickness, cm 2.0
Concentration 0.52 μg / ml
Optical density 0.198

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