Experiment 12 3BL - Ali A. Esmaeili 7 February 2011...

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

View Full Document Right Arrow Icon
Ali A. Esmaeili 7 February 2011 Experiment 12 The Magtrieve Oxidation of 4-Chlorobenzyl Alcohol, A Solvent-Free Reaction Discussion: Experiment 12 illustrated various phase changes in the beaker that allowed the collection of a purified product. The sand bath first heated the reactants to a temperature higher than the melting point of 4-cholorbenzyl alcohol (70-72°C). This allowed the alcohol to liquefy and thus react with the Magtrieve. The oxidation of the 4- chlorobenzyl alcohol was caused by the Magtrieve and yielded the product 4- chlorobenzaldeyhyde. The temperature of the reaction was greater than the melting point of 4-chlorobenzaldehyde (44.5-46.2°C ) and aldehyde’s high vapor pressure both resulted in the aldehyde vapors evaporating and separating from the starting material. As soon as the aldehyde vapor reached the cold surface of the watch glass, it solidified into needle-like crystals. The deposition of the crystals from the vapor is largely contingent on the fact that the watch glass is kept at a low temperature. This drop in temperature lowered the energy of the vapor and game the perfect conditions for crystals to form. This experiment requires an excess amount of Magtrieve because only the surface
Background image of page 1

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

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

This note was uploaded on 03/13/2011 for the course CHEM 3BL taught by Professor Chunmei during the Spring '08 term at University of California, Berkeley.

Page1 / 4

Experiment 12 3BL - Ali A. Esmaeili 7 February 2011...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online