Transcript Acetaldehyde2

Acetaldehyde
Regents Chemistry-Molecule Project 2009
Presented by Brett ApRoberts and Siggi Holmgren
Molecule Statistics
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Common Name
Acetaldehyde
Systematic Name Ethanal
Molecular Formula C2H4O
Gram Formula Mass 44.05 g/mol
Elements in Molecule
Carbon, Oxygen, and Hydrogen
• Types of Bonds in Molecule
Single and Double Covalent Bonds
Bonding in Ethanal
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Carbon can make four covalent bonds-Four unpaired electrons
Hydrogen can make one covalent bonds-One unpaired electron
Oxygen can make two covalent bonds-Two unpaired electrons
Bonding and Geometry
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Where can we find Ethanal?
• Alcohol is converted into Ethanal in
human metabolism.
• Yeast and bacteria convert Ethanal to
acetic acid in the vinegar making
process.
• Used in the production of wood and
bookbinding glues known as polyvinyl
acetates
Relevance of Ethanal
• Vinegar is a very common food in
most cultures around the world.
Importance to Human Survival
• Ethyl alcohol, found in foods and
beverages, must be broken down into
Ethanal in our bodies or it would
reach a toxic level that would be
lethal.
Metabolic Oxidation of Ethanal
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This is the reaction pathway in our bodies and in vinegar production
Life without Ethanal
• I think food with be less interesting if
Ethanal because we wouldn’t have
vinegar for our salad dressing, pickles,
or countless other recipes that
include this sour product.
• Ethanal is a colorless liquid that has a
stong “green apple” smell and
without it we might not have this
flavor for our candy, gum, etc.
When is Unity Benefitial?
• When carbon, hydrogen, and oxygen
bind together in Ethanal all of the
atoms have full valence shells and
benefit in being more stable than
existing as atoms alone.
• Since Ethanal reacts with oxygen to
form acetic acid, the atoms can be
more stable (benefit) when bonded
together in acetic acid.
Bibliography
1.
The Alkane Series: Building Them From Scratch
http://www.green-planet-solar-energy.com/electron-dot-diagram.html
Accessed 12/06/09
2.
Wikipedia Commons File:Acetaldehyde-2D.png
http://commons.wikimedia.org/wiki/File:Acetaldehyde-2D.png
Accessed 12/06/09
3.
Background: Ethanol's Journey Through Your Body
http://www.biochem.arizona.edu/classes/bioc462/462bh2008/462bhonorsprojects/462bhonors2
06/lowej/Acetaldehyde/ingestalcohol2.htm
Accessed 12/06/09
4.
The Race Equity Project
http://lsnc.net/equity/category/environmental-justice/
Accessed 12/06/09
5.
Science Aid-Alcohols
http://scienceaid.co.uk/chemistry/organic/alcohols.html
Accessed 12/31/09
6.
International Agency for Research for Cancer
http://monographs.iarc.fr/ENG/Monographs/vol71/mono71-11.pdf
Accessed 12/31/09