Describe the physical appearance of this sample

  • No School
  • AA 1
  • 2

This preview shows page 1 - 2 out of 2 pages.

Calculate the concentration of 12-2-12 in Sample C (Part IIc). Describe the physical appearance of this sample. Suggest a molecular-level explanation for this appearance. a. Viscus and bubbly
Image of page 1

Subscribe to view the full document.

Summary/Discussion: While using a reflux to heat and boil a mixture of acetonitrile, 1-bromododecane and N,N,N’,N’- tetramethylethylenediamine in order to create 12-2-12 product, no product was isolated during the almost 60 min of heating. Reason being the temperature could have been to high which caused and over boil of the mixture. Attempts were made to create product such as added more acetone and scraping glass with spatula, even using another’s crystals to try and jumpstart crystallization. However, none formed. Joining Peyton Bunn and Taylor Corridon, they isolated product and flakey, white crystals were formed. However, not enough product was formed with them to conduct the rest of the experiments, so use of Joan and Alaina’s product was needed to finish experiments to assess colloidal properties of 12-2-12. Using Peyton and Taylor’s sample, a melting point range of 165-169 was found, since it is not close to the literature value of 194-196 and wider than 2 degrees, the substance isolated was not very pure. The colloidal properties of 12-2-12 with varying concentrations were observed and the results correlated with known information that at low concentrations, the hydrophobic properties of 12-2-12 extend greatly to minimize the contact with water, which will not absorb light as well.
Image of page 2
  • Fall '19
  • Solvent, Ultraviolet, Peyton Bunn, Colloidal Study of Gemini Surfactants

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

Ask Expert Tutors You can ask 0 bonus questions You can ask 0 questions (0 expire soon) You can ask 0 questions (will expire )
Answers in as fast as 15 minutes