Purification Techniques_Pt. 2

What is the stationary phase in chromatography?

• The phase that moves

• The phase that doesn't move

• The solvent

• The adsorbent

What is the mobile phase in chromatography?

• The phase that moves

• The phase that doesn't move

• The solvent

• The adsorbent

What is the purpose of the mobile phase in chromatography?

• To absorb the compounds

• To stop the compounds from moving

• To bring up the compounds to be tested

• To separate the compounds

What is the stationary phase in paper chromatography?

• The phase that moves

• The phase that doesn't move

• The solvent

• The adsorbent

What is the mobile phase in paper chromatography?

• The phase that moves

• The phase that doesn't move

• The solvent

• The adsorbent

What is the technique used to move the solvent through the stationary phase in paper chromatography?

• Capillary action

• Evaporation

• Filtration

• Decantation

What is the retention factor, Rf, in chromatography?

• The distance the solute moves

• The distance traveled by the solvent front

• The ratio of the solute distance to the solvent distance

• The ratio of the solvent distance to the solute distance

What is the minimum boiling point difference required for simple distillation?

• 10 degrees Celsius

• 15 degrees Celsius

• 20 degrees Celsius

• 25 degrees Celsius

What is the process called when a liquid solution is converted into vapor and then condensed back into liquid?

• Filtration

• Evaporation

• Distillation

• Condensation

What is the purpose of a fractioning column in fractional distillation?

• To separate impurities

• To control the temperature

• To increase the pressure

• To increase the boiling point