The number of acyl groups in the given triacylglycerol molecules have to be predicted. Concept introduction: Triacylglycerol is produced by the reaction of one molecule of glycerol and three molecules of fatty acid. The three hydroxyl groups of glycerol get esterified on reaction with fatty acids.
The number of acyl groups in the given triacylglycerol molecules have to be predicted. Concept introduction: Triacylglycerol is produced by the reaction of one molecule of glycerol and three molecules of fatty acid. The three hydroxyl groups of glycerol get esterified on reaction with fatty acids.
Solution Summary: The author explains that triacylglycerol is produced by the reaction of one molecule and three molecules of fatty acid. If the -OH group is removed from a carboxylic
Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.
Chapter 19, Problem 19.39EP
(a)
Interpretation Introduction
Interpretation: The number of acyl groups in the given triacylglycerol molecules have to be predicted.
Concept introduction: Triacylglycerol is produced by the reaction of one molecule of glycerol and three molecules of fatty acid. The three hydroxyl groups of glycerol get esterified on reaction with fatty acids.
(b)
Interpretation Introduction
Interpretation: The number of 18:2 fatty acid residues in the given triacylglycerol molecules have to be predicted.
Concept introduction: Triacylglycerol is produced by the reaction of one molecule of glycerol and three molecules of fatty acid. The three hydroxyl groups of glycerol get esterified on reaction with fatty acids.
(c)
Interpretation Introduction
Interpretation: The number of SFAs residues in the given triacylglycerol molecules have to be predicted.
Concept introduction: SFA means saturated fatty acids which contain only single carbon-carbon bonds.
(d)
Interpretation Introduction
Interpretation: The number of linolenic acid residues in the given triacylglycerol molecules have to be predicted.
Concept introduction: Linolenic acid (18:3) is an unsaturated fatty acid which contains 18 carbon atoms and three double bonds at carbon 9, carbon 12 and carbon 15.
Lab Data
The distance entered is out of the expected range.
Check your calculations and conversion factors.
Verify your distance. Will the gas cloud be closer to the cotton ball with HCI or NH3?
Did you report your data to the correct number of significant figures?
- X
Experimental Set-up
HCI-NH3
NH3-HCI
Longer Tube
Time elapsed (min)
5 (exact)
5 (exact)
Distance between cotton balls (cm)
24.30
24.40
Distance to cloud (cm)
9.70
14.16
Distance traveled by HCI (cm)
9.70
9.80
Distance traveled by NH3 (cm)
14.60
14.50
Diffusion rate of HCI (cm/hr)
116
118
Diffusion rate of NH3 (cm/hr)
175.2
175.2
How to measure distance and calculate rate
For the titration of a divalent metal ion (M2+) with EDTA, the stoichiometry of the reaction is typically:
1:1 (one mole of EDTA per mole of metal ion)
2:1 (two moles of EDTA per mole of metal ion)
1:2 (one mole of EDTA per two moles of metal ion)
None of the above
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