dehydrogenation_hydration - Patricia Mora Chem 3BL...

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

View Full Document Right Arrow Icon
Patricia Mora Chem 3BL 03/03/10 Dehydrogenation and Hydrogenation In this experiment, we examined the reaction of monoterpene carvone with Pd/C and heat. In addition, we attempted to isolate the product of carvone and Pd/C by using acids and bases and by separating aqueous and organic layers. The purpose of this experiment was to determine the relative stability of isomeric alkenes through hydrogenation of alkenes with hydrogen gas and metal catalyst or transfer hydrogenation. During the transfer-hydrogenation reaction, Pd/C was dehydrogenated and donates hydrogen to carvone, resulting in the cyclohexane part of carvone becoming a benzene ring in the presence of heat. Gaining more hydrogens to create double bonds made the product more stable, and also aromatic. When the bonds are broken, energy is added to the reaction while forming bonds releases energy from the reaction. Two C-H bonds were broken (412 kJ/mol + 412 kJ/mol = +824 kJ/mol is added), A C=C double was broken (824 kJ/mol + 614 kJ/mol = +1438 kJ/mol added to
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 Berkeley.

Page1 / 2

dehydrogenation_hydration - Patricia Mora Chem 3BL...

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