Labpaq Lab 10

Topics: Chemistry, Organic chemistry, Oxygen Pages: 2 (482 words) Published: July 15, 2013
Lab 2: Infra-Red (IR) - Nuclear Magnetic Resonance (NMR) Exercises In Molecular Spectroscopy - Structural Determination Organic Chemistry II
CHEM 2425
Manrique
October 30, 2012

Alex Wolf

Introduction
For the purposes of this lab, the chemical formula will be given, and the degrees of unsaturation can be calculate from the formula (2C+2)-(H+Hal-N)/2. The degrees of unsaturation will give clues as to the structure. A double bond, as well as a ring will have one degree of unsaturation each, while a double bond will have two. All of these added will give a total of degrees and can eliminate some possibilities that other data would suggest if there are not enough degrees for those structures. Mass Spectrometry is a fast procedure that can give the structure of a molecule, but breaking everything apart is tedious, and it is used mainly to find the molecular weight of a molecule since the last and highest peak gives a signal in an equivalent of grams to mole of the molecule. Infra-red spectroscopy (IR) will present peaks in places characteristic of certain functional groups, and can show if a group is present, although there are some instances where a functional group will not show up. Nuclear magnetic resonance (NMR), specifically H-NMR, will show all hydrogen in a molecule. The peaks will be shifted in characteristic ways, but will also be shifted due to their proximity to an electronegative atom. For this lab, integration of peaks will be given, which gives the amount of hydrogen in a peak, and the splitting patterns of each peak can give how much hydrogen is attached to adjacent atoms (Manrique, 2012). Objective

To determine the structure of organic compounds (Manrique, 2012). Hypothesis
By analyzing the mass spec, IR and NMR graphs, the structure of a molecule can be found. Experiment
Materials
Lab 2 Handout
Procedure
Analyze each graph and deduce the structural formula of each molecule.

Lab Data

Analysis
For the molecule with chemical...

Cited: Manrique, C. (2012). Lab 2: Infra-Red (IR)- Nuclear Magnetic Resonance (NMR) Exercises In Molecular Spectroscopy- Structural Determination. Organic Chemistry Lab 2. Dallas. Tx.
Continue Reading

Please join StudyMode to read the full document

You May Also Find These Documents Helpful

  • lab 10 Essay
  • Lab 1 labpaq Essay
  • Lab 10 Essay
  • Labpaq Math Lab Essay
  • Essay about Exp 10 Stoichiometry Lab Reportnew
  • Labpaq Research Paper
  • Gr 10 Science Lab Essay
  • Lab 10 Report Essay

Become a StudyMode Member

Sign Up - It's Free
Soporte Vertical para PS4/PS4 Slim/Pro Ventilador de refrigeración Cooling Stand | 斉木楠雄のΨ難_完結編 | C-A-- CAMP season 01 episode 23