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What can curcumin be used as in the lab? - ANSWER -pH
Indicator
What instruments were used in this lab? Also know the parts. -
ANSWER -Spec
20
What is the maximum wavelength of curcumin in the
UV/Vis sprectrum? -
ANSWER -
425
What test was used to classify aldehydes and ketones? -
ANSWER -Tollens
Will a ketone or aldehyde react with the Tollen's reagent? -
ANSWER -Aldehyde
will react but Ketone
will not.
What does a positive Tollen's test look like? - ANSWER -
Silver
, What physical state are the unknown ketone/aldehyde in? -
ANSWER -Liquid
What is the ketone/aldehyde derivative called? -
ANSWER -2,4
dinitrophenylhydrazone
What reagent was used to make the derivative? -
ANSWER -2,4,
dinitrophenylhydrazine
What compound was extracted out of the aspirin tablet? What
solvent was used
to extract it? - ANSWER -
acetylsalicyclic acid
What was the acid used in the hydrolysis of acetylsalicyclic
acid to salicyclic
acid? - ANSWER -HCl which is diluted 20% to
Muratic acid
What temperature did this reaction performed at? (salicyclic
acid) What is the
byproduct of this reaction? - ANSWER -60 degree Celsius
and acetic acid
What acid catalyst was used in the esterification reaction
(SA to ES)? -