Respuesta :
You should perform a hot gravity filtration as part of the recrystallization process when impurities are insoluble in the hot recrystallization solvent.
What is hot gravity filtration?
Before recrystallization, these impurities are often removed from a solution using a technique called hot gravity filtering. A form of filtration called hot filtration involves heating both the sample and the filter apparatus while it is being used. For recrystallization when there are impurities in the solution, hot filtration is necessary.
Recrystallization requires a hot solution because crystals must form upon cooling in a supersaturated solution. Because most solids are more soluble at higher temperatures, hot solutions can hold more solute in suspension than cold ones. This indicates that a saturated solution created at a higher temperature than at a cold temperature will have more dissolved solute.. After cooling, the hot solution will be supersaturated, holding more dissolved solute than its cold equivalent.
In some solvents, the chemical may be more soluble than the contaminant. The idea is to select a solvent that, at elevated temperatures, dissolves the chemical but not the contaminant. then the impurity is during the hot gravity filtration process were filtered out.
Learn more about hot gravity filtration https://brainly.com/question/17057857
#SPJ4
