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2 0.81 Yellow No. 6 0.77
Red No. 3 0.61 Green No. 3 1.00
Red No. 4 0.67 Blue No. 1 1.00
Yellow No. 5 0.75 Blue No. 2 0.79
Rf values for coloring agents in food coloring
Food color Zone color Distance Solute Distance solvent Rf FD&ID
Green Yellow 2.6 cm 6 cm .43
Blue 5 cm 6 cm .83
Blue Blue 7.2 cm 7.2 cm 1 Blue No. 1
Yellow Yellow 2.8 cm 6.2 cm .45
Red 4.2 cm 6.2 cm .67 Red No. 4
Red Red 6.5 cm 6.5 cm 1
Purple 4.8 cm 6.5 cm .74
Calculation: Distance of the solute/Distance of the solvent
Ex. Yellow 2.6 cm / 6 cm = .43
1.Why do food dyes separate into different colors as they move up the piece of chromatography paper?
Food dyes separate into different colors as they move up the piece of chromatography paper because, when the solution gets absorbed into the paper, it dissolves the color in the ink spot that you have made...
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