140. Solving a chemistry problem
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140. Solving a chemistry problem
I7. Using the Bouguer - Lambert - Beer equation, determine the parameter "X" (in accordance with the problem number) in the specified units (Table 2).
Detected ion or substance Cu2
Reaction of formation of colored compound C with dithizone CuR2 in CCL4
Wavelength, nm 620
ε 35000
Layer thickness, cm 1.0
Concentration x mg / l
Optical density 0.125
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