3AL Lab 5 - Stephen Wilson GSI Timothy Fei Experiment#5...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Stephen Wilson GSI: Timothy Fei Experiment #5 March 31 st , 2008 Chem 3AL Section 111 Partners: Anouck Champsaur, Vahid Hamzeheinejad, and Gary Lam Recrystallization and Melting Points Purpose: The purpose of this lab was to learn how to choose a good solvent by finding a solvent to use to recrystallize an unknown sample and identify it, and to learn how to remove impurities from brown sugar using activated charcoal. Methods: Each group was given 500 mg of an unknown solid to find the identity of. Each member of the group took 80-100 mg of the unknown to experiment with to try and find the best solvent to use to recrystallize it. The possible solvents were 95% ethanol, reagent grade acetone, hexane, or water, we also tested solubility in diethyl ether to help indentify it later. We tested each solvent by seeing if the unknown would not dissolve at room temperature, if it would dissolve with heating, and if it would recrystallize after it was cooled. We then decided on a solvent to use based on the tests. Each member of the group then purified their remaining unknown in the
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern