Post a New Question

0rganic Chemistry

posted by .

How are INSOLUBLE impurities removed during recrystallization? How are SOLUBLE impurities removed?

thank you.

  • 0rganic Chemistry -

    If I understand the question, for insoluble materials add enough solvent to dissolve the major material you want to keep but doesn't dissolve the insoluble material, filter, then recrystallize the material from solvent.
    Soluble materials are removed by choosing solvents in which the solubility of the impurity is different than the solubility of the material you want to keep. Through several recrystallizations the soluble materials can be removed at the expense of leaving some of the material you want to keep behind in the solvent.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. To Sheryl: polarity

    The exact question is: Benzyl alcohol (bp 205 degree C) was selected by a student to crystallize fluorenol (mp 153-154 degrees C) because the solubility characteristics of this solvent are appropriate. However, this solvent is not …
  2. Chemistry

    If some volatile impurities in the crucible are removed from the hydrated MgSO4 along with the water, is the reported mass of water removed too high or too low. Explain.
  3. Math

    Need help understanding half-life/decay problem for upcoming test. A water filter is constructed to form a foam that removes 25% of the particulate impurities for each inch of foam. 1.What percentage of the particulate impurities will …
  4. chem 121

    explain why washing an impure solid with a cold solvent is not good as recrystallization for removing all the soluble impurities?
  5. Pre-Calculus

    10. Suppose the cost C of removing p% of the impurities from the waste water in a manufacturing process is given by a) Where does the graph of this function have a vertical asymptote?
  6. Analytical Chemistry

    Match the following terms about analytical precipitations to their definitions: A.) Coprecipitation B.) Adsorption C.) Absorption D.) Gathering E.) Masking F.) Digestion G.) Peptization 1.) Inclusion or occlusion of impurities within …
  7. Chem !!!!!!!!!!!!!!!!

    All I know is that the colored impurities are soluble in water as sodium salts. so what type of compound does this suggest these impurities are?
  8. chemistry

    1) what potential impurities were removed during recrystallzation?
  9. Chemistry

    1)what potential impurities were removed during solventless aldol recrystallzation?
  10. Orgo Lab

    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?

More Similar Questions

Post a New Question