The student calculated that the Rₑ value of the orange dye in the experiment shown in Figure 5 was 0.48.
Calculate the distance moved by the solvent front when the orange dye had moved 5.4 cm.

The Rₑ (retardation factor) value in chromatography is a ratio calculated using the formula: Rₑ = distance moved by the substance (the spot) / distance moved by the solvent front. In this problem, we are given: - Rₑ = 0.48 - Distance moved by substance = 5.4 cm We need to find the distance moved by the solvent front. We must rearrange the formula: Distance moved by solvent front = Distance moved by substance / Rₑ Now, substitute the values: Distance moved by solvent front = 5.4 cm / 0.48 Distance moved by solvent front = 11.25 cm The solvent front moved 11.25 cm.