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Terms in this set (53)
The process of turning liquid into a vapor is known as
During which of the following times must an organic lab student wear goggles
at all times in the lab room
Turning a vapor into a liquid is known as
The bp of ethyl acetate is
77.10 degrees celsius
The bp of butyl acetate is
126 degrees celsius
always report bp for liquids as you report mp for solids it is actually a
In this experiment you will use a ________to collect your distillate
in boone it si 97-98 degrees celsuis but normal is
101-102 degrees celsius
if the distillation is working perfectly which compound from your actual experiment would distill second
assume that you carried out a distillation of a mixture at 1atm. if the pressure increased to 2atm what change in bp of your mixture would you have sen
liquids that boil below 150 degrees at 1atm and have bp less than 25 degrees would be seperated by
______ distillation is used when the components to be seperated boil w/in 25 degrees of each other is called a _______
which condensor will water be flowing through the actual experimental set up
on the GC plot the display as a series of ______vs _______
peaks vs retention time
don not distill to dryness T/F
Assuming that the solubility of trimyristin is 10 g/L in acetone, what is the minimum amount of boiling acetone (in mL) needed to dissolve a 3.543 gram sample?
Give answer as XXX mL.
Assume that you carried out a distillation of a mixture at 1 atm. If the pressure were increased to 2 atm, how would the boiling point change?
For example, say you have to heat a reaction to around 80 degrees Celsius for 17 hours. You would use the technique of
The reflux temperature is near the boiling point of the
An liquid / solid extraction is carred out by adding 4.5 grams of nutmeg and 25 mL of diethyl ether (the reaction solvent) to the reaction flask. A heating mantle (with appropriate power controller) is used to heat the reaction and bring it to REFLUX. What approximate temperature is the reflux taking place at?
35 degrees celsius (34in boone)
For the natural product reaction you actually conduct in lab, the reflux will be allowed to proceed for _______ min after boil
Assuming you have set up a correct vertical reflux condenser, the cool water outlet will be the ______________ inlet.
he ideal solvent for the recrystallization of a particular compound is one that
a. dissolves a moderately large amount of the compound when hot
b. does not react with the compound
c. boils at a temperature below the compound's melting point
d. dissolves only a small amount of compound when cool
What specific technique is used to separate solid material from a solution?
Rotary evaporation reduces the boiling point of a material by effectively lowering the ___ within the flask
The essence of recrystallizatio of a solid.
The solvent used to purify trimyristin after it was extracted from nutmeg in this experiment is hot/boiling
Generally, melting points are taken for what reasons?(multiple answers are possible)
ID of unknown
The melting point apparatus should be heating at what rate (?°C/min) as it approaches the melting point of the compound?
The melting point is actually a melting
The melting point of a pure organic compound:
is sharp, having a range of 1 degree or less
When using the melting point apparatus, it is best to keep the sample loosely packed.so that it will melt uniformly.
A melting point is really a temperature range rather just a single temperature.
Taking a melting point can help determine the purity of a sample.
How will the ester be analyzed
never cleanse the salt plates with
1700 and 3400
After removing the cacl2 the ester will be purified through
purpose of adding cacl2 during week one was to remove what
water from the ester during the week
in general fischer esterification is reacted with
the small molecule by product of a fischner esterficaton is
what type of glassware is used for a liquid liquid extraction
when two imiscible liquids are placed in a separator funnel the liquid with the lower density will form what layer
should you ever throw away layers from an extraction until you are absolutely sure you will never need it again
benzyl acetate has what semll
isopentyl acetate has what smell
instead of two distinct layers sometimes a fog of particles forms in a separatory funnel and is known as
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