Post Lab 9 Discussion

The product is the crystals involving the br and the

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
product and the reactant. The product is the crystals, involving the Br and the reactant is the trans-cinnamic acid. However, my TLC plate did turn out accurately since the product and reactant lane were the same. They should have been different so they could be compared with the third lane, which was a mixture of both of them. Percent Yield: 0.1021g/0.1132g = .9019g x 100 = 90.19% Conclusion: In this lab, we determined that the product of the bromination of trans-cinammic acid would be anti addition. The melting point was found from the crystals that were formed to determine if it was syn or anti. Then the TLC plates were made to analyze the trans-cinnamic acid turning into the dibromo compound. My TLC plate resulted in many errors. The third lane did not have two spots and all the spots in each lane had relatively the same Rf values. If it was correct, one of the spots in the third lane should have had the same Rf value as the product in lane one, and the other spot in lane three should have had the same Rf value as the trans-cinnamic acid in lane two. The reasons that the error could have occurred were because the plate didn’t get to sit in the solution long enough before it was analyzed. Instead of going up three fourths of the way, it only went up half way. Also the co spot in lane three might have been an uneven mixture between the product and reactant.
Image of page 1
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