1. To investigate the physical properties and uses of some common aldehydes and ketones. 2. To develop familiarity with reaction of aldehydes which are of particular importance in biochemistry. 3. To learn to use characteristic reactions to distinguish between aldehydes and ketones, and between aliphatic and aromatic aldehydes.
1. To investigate the physical properties and uses of some common aldehydes and ketones. 2. To develop familiarity with reaction of aldehydes which are of particular importance in biochemistry. 3. To learn to use characteristic reactions to distinguish between aldehydes and ketones, and between aliphatic and aromatic aldehydes.
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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Need help with the pre-laboratory questions 1-3
Transcribed Image Text:Physical and Chemical Properties of Aldehydes/Ketones & Tollens' Test
OBJECTIVES
1. To investigate the physical properties and uses of some common aldehydes and ketones.
2. To develop familiarity with reaction of aldehydes which are of particular importance in biochemistry.
3. To learn to use characteristic reactions to distinguish between aldehydes and ketones, and between
aliphatic and aromatic aldehydes.
PRE-LABORATORY QUESTIONS
Complete as assigned.
1. Find the structures of ethanal (acetaldehyde) and acetone. Draw the full structure for each compound
and classify each as either an aldehyde or ketone.
2. How is a positive Tollens' test indicated?
3. Choose one of the compounds from the text or today's lab that would react with Tollens' Reagent and
write a chemical equation for this reaction. Use full structures for any organic compound.
lest
ection
13
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