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2.Which of the two dye molecules is more polar? Briefly explain your answer (point form), by making reference to the evidence obtained during this experiment. 3.The surface of the alumina stationary phase contains many O-H groups. Given that fluorescein also contains an O-H group, what is the dominant, specific intermolecular force that attracts the fluorescein to the alumina? Think back to first year! 4.Butanol is an organic solvent that is similar to ethanol, except it contains a longer hydrocarbon chain (its condensed structure is CH3CH2CH2CH2OH). How would you predict the Rf values of the two dyes to change if butanol were used instead of ethanol for either of the two above experiments? Explain briefly in point form. Basedontheexperiment.Fluorosceneismorepolarthanothers.sincethemorepolarofthemoleculeswillbestrongertobindontheplate.furthermore,thespeedisalsoslowerthanthelesspolarmoleculesduetothestrengthofmoleculetotheadsorbentTLC'splateTherewillbehaving:"Hydrogen-Bonding"asthedominantIntermolecularForceinthiscaseHHHHHHllllllEthanol:H-C-C-OHvs.Butanol:H-C-C-C-C-IHllllll''HHHHHHmorepolarlesspolarwhenusingButanolinsteadEthanol,itwillbecausing:①.Fluoresceinwillnotmovefurthersincelackofpolarityofthesolvent②.Rf=attddistancesolventfrontHence,theshorterFluoresceintravelleddistancewillbe,thesmallerRfvalueis.