Crystallization & Distillation
This purification technique dissolves a solid in hot solvent and forms pure crystals as it cools.
What is crystallization?
This piece of glassware is used to separate two immiscible layers in liquid-liquid extraction.
What is a separatory funnel?
In TLC, the mobile phase travels up the plate by this natural process.
What is capillary action?
In crystallization, impurities are removed by this method before the solution is allowed to cool.
What is hot filtration?
In filtration, the liquid that passes through the filter paper is called this.
What is the filtrate?
A compound with a low Rf value on a TLC plate has this type of polarity.
What is high polarity?
Simple distillation works best when the boiling point difference between two liquids is greater than this.
What is 25°C?
Organic compounds prefer this layer during liquid-liquid extraction.
What is the organic solvent layer?
Sublimation works best for compounds with this type of intermolecular forces.
What are weak intermolecular forces?
Fractional distillation uses this to perform multiple vaporization-condensation cycles in one operation.
What is a column?
This type of filtration uses a Buchner funnel and is used when you want to collect the solid.
What is vacuum filtration?
In precipitation, a compound is forced out of solution by changing this property of the solution.
What is pH?
In distillation, each liquid turns to vapor at different times because each has a different what.
What are boiling points?
In liquid-liquid extraction, the two layers drain separately because of differences in this property.
What is density?
In sublimation, low pressure causes the compound to skip the liquid phase and go directly into this state.
What is gas?