Question: In the flushing and cleaning of columns used in liquid
In the flushing and cleaning of columns used in liquid chromatography, a series of solvents is used. Hexane (C6H14), chloroform (CHCl3), methanol (CH3OH), and water are passed through the column in that order. Rationalize the order in terms of intermolecular forces and the mutual solubility (miscibility) of the solvents.
Answer to relevant QuestionsStructure, pressure, and temperature all have an effect on solubility. Discuss each of their effects. What is Henry’s law? Why does Henry’s law not work for HCl(g)? What do the terms hydrophobic and hydrophilic mean? Which of the following will have the lowest total vapor pressure at 25oC? Which has the highest vapor pressure at 25oC? At 25oC, the vapor pressure of pure water is 23.8 torr. a. Pure water Consider the following: What would happen to the level of liquid in the two arms if the semipermeable membrane separating the two liquids were permeable to a. H2O (the solvent) only? b. H2O and solute? A forensic chemist is given a white solid that is suspected of being pure cocaine (C17H21NO4, molar mass = 303.36 g/mol). She dissolves 1.22 + 0.01 g of the solid in 15.60 + 0.01 g of benzene. The freezing point is lowered ...Slaked lime [Ca(OH)2] is used to soften hard water by removing calcium ions from hard water through the reaction Ca(OH)2(aq) + Ca2+(aq) + 2HCO3-(aq) → 2CaCO3(s) + 2H2O(l)
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