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hydrogenation
addition of a molecule of H2 across a unit of unsaturation
Is this molecule Saturated or unsaturated
unsaturated
Is this molecule saturated or unsaturated
Saturated
How many units of unsaturation does this have?
0
1
2
3
4
5
4
Which of the following statements about unsaturated fats is incorrect?
Unsaturated fats are believed to be healthy
Unsaturated fats can contain trans alkenes
Unsaturated fats are made up of a molecule of glycerol and 3 fatty acids
Unsaturated fats can react with oxygen at the allylic positions and become rancid
unsaturated fats are stable
What exactly is studied in this experiment?
selective hydrogenation of ethyl cinnamate through palladium catalysis
What is a reduction reaction? What is being reduced in this case?
carbons form new bonds to hydrogens
the alkene of ethyl cinnamate
what is the role of Pd/C ( palladium on carbon) the experiment?
it is a hydrogenation catalyst
What is a reflux condenser?
The key component to a reflux apparatus
it has a hollow inner layer where cold water passes through to cool the inner surface
acts to cool and condense liquid so solvent doesn’t boil away
When should experimentalists consider using a reflux apparatus?
any time a heating plate is used
when the reaction mixture is heated near or over the boiling point of at least one component
it is always optional because it does not affect the outcome of the experiment
only when ethanol is used as the solvent
when the lab temperature is hot
when the reaction mixture is heated near or over the boiling point of at least one component
what is a chromophore?
the part of a molecule that is responsible for absorbing light
when would you use a TLC stain?
When a molecule that does not have a chromophore is being analyzed
How does a potassium permanganate ( KMnO4 ) stain work?
it is an oxidant
oxidizes molecules with oxidizable functional groups
alkenes, alcohols, amines, aldehydes, alkynes
Note 
Flashcard (21)