Which statements are FALSE about selecting a solvent for recrystallization?
(Select all correct answers.)
Any solvent can be used for recrystallization as long as the compound dissolves in it.
The compound should exhibit a high solubility in the solvent at high temperature.
The compound should exhibit a fairly high solubility in the solvent at low temperature.
The compound should dissolve better in the chosen solvent than the impurity at low temperature.
The compound should exhibit a relatively steep solubility curve in the chosen solvent.
What are the advantages of using a solvent pair for recrystallization? Select all that apply. A) You can control the solubility of the substance in the mixed solvent. B) You don't have to know the exact amounts of the solvents
which of the 3 solvent would not be suitable recrystallization solvent for acetanilide? Why? - water as recrytallization solvent for acetanilide - chloroform as recrystallization solvent for acxetanilide - methanol as
Referring to solvent mixtures, which statements are TRUE ? (Select all correct answers.) The solvents of the solvent mixture should have very similar polarities. The solvents of the solvent mixture should have different
I am reading through material for a recrystallization experiment, and I had a few things I wasn't sure about; - Why once filtered, should the recrystallization solution be allowed to cool slowly, undisturbed, rather than quickly?
Recrystallization is often used at the end of a synthesis. Choose the most accurate answer/s to explain the purpose of recrystallization and how it is done effectively? Note there may be more than one correct answer. 1.Dissolve
Assume the density of aqueous HCl is the same as water (1.0 g/mL) and use the densities of ethanol (0.789 g/mL) and water as well as the actual amount of recrystallization solvent used to calculate the mass of recrystallization
Which of the following statements is /are true? Answer a. None of he above. b. Impurities in a solvent raise the freezing point of that solvent c. All of the above d. Non-volatile impurities lower the boiling point of a solvent e.
Consider the following errors that could be made when running the TLC. Indicate what should be done to correct the error. a) A 2 component mixture containing 1-octene and 1,4- dimethylbenzene gave only 1 spot with and Rf value of