Recrystallization Lab 2025-2026 Most Recent
Version Comprehensive Questions and Verified
Answers Accurate Solutions Already Graded A+
Get it 100% Correct
1) Choose a solvent.
2) Add hot solvent just until all of the compound you are trying to purify dissolves.
3) If colored impurities are present, add decolorizing charcoal.
4) If charcoal was added, filter the resulting solution while it is still hot.
5) Cool the solution.
6) Separate the solid compound from the solvent.
7) Dry the isolated crystals. - CORRECT ANSWER: What are the 7 steps of
recrystallization?
All slightly toxic (ethanol also extremely flammable). - CORRECT ANSWER: What are
the hazards associated with the compounds in this experiment?
Allowing the product to crystallize slowly tends to give larger, more pure crystals. -
CORRECT ANSWER: Why should the product be allowed to crystallize slowly and not
plunge directly into ice water?
Benzoin - CORRECT ANSWER: In this experiment, what is being recrystallized from
ethanol?
Decolorizing charcoal will not be used. Hot filtration will not be needed. - CORRECT
ANSWER: Is the starting material in this lab colored? What is the result of this?
If you use too little solvent, not all of your crystals will dissolve in the hot solvent, and
they will retain some impurities. The purity will decrease and the percent yield will
Version Comprehensive Questions and Verified
Answers Accurate Solutions Already Graded A+
Get it 100% Correct
1) Choose a solvent.
2) Add hot solvent just until all of the compound you are trying to purify dissolves.
3) If colored impurities are present, add decolorizing charcoal.
4) If charcoal was added, filter the resulting solution while it is still hot.
5) Cool the solution.
6) Separate the solid compound from the solvent.
7) Dry the isolated crystals. - CORRECT ANSWER: What are the 7 steps of
recrystallization?
All slightly toxic (ethanol also extremely flammable). - CORRECT ANSWER: What are
the hazards associated with the compounds in this experiment?
Allowing the product to crystallize slowly tends to give larger, more pure crystals. -
CORRECT ANSWER: Why should the product be allowed to crystallize slowly and not
plunge directly into ice water?
Benzoin - CORRECT ANSWER: In this experiment, what is being recrystallized from
ethanol?
Decolorizing charcoal will not be used. Hot filtration will not be needed. - CORRECT
ANSWER: Is the starting material in this lab colored? What is the result of this?
If you use too little solvent, not all of your crystals will dissolve in the hot solvent, and
they will retain some impurities. The purity will decrease and the percent yield will
