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gcse chemistry

The Rf value of a dye depends on:
• the solubility of the dye in the solvent
• the attraction of the dye to the paper.

Which will definitely produce a smaller Rf value if the solvent and paper are both changed?
The dye is less soluble in the new solvent and less attracted to the new paper.
The dye is less soluble in the new solvent and more attracted to the new paper.
The dye is more soluble in the new solvent and less attracted to the new paper.
The dye is more soluble in the new solvent and more attracted to the new paper.