116. Solving a chemistry problem
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116. Solving a chemistry problem
Calculate the concentration of Cr6 and Mn7 in the solution from the following photometry data in a cuvette with I = 2 cm:
At λ= 550 nm – ελ ( K2Cr2O7) = 0.0; ελ (KMnO4) = 2100; A=0.230;
At λ= 430 nm – ελ ( K2Cr2O7) = 220; ελ (KMnO4) = 500; A=0.400.
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