Aldol Condensation: The Synthesis of 2'-Hydroxy-4-methoxychalcone 25 mg of your product and dissolve in MeOH (50 mL) using a 50 mL volumetric flask- stock solution. Take 0.5 mL of the stock solution and make up (in a volumetric flask) to 25 mL- Solution A. Take 5 mL of solution A and make up to 25 mL with MeOH - solution B- and record spectrum. Then take 1 mL of solution A and make up to 25 mL with MEOH – solution C- and again record spectrum. Plot the value of the absorbance at the Amax versus concentration and using the Beer-Lambert relationship (Abs ecl) calculate the extinction coefficient (ɛ) and please show graph

Organic Chemistry
9th Edition
ISBN:9781305080485
Author:John E. McMurry
Publisher:John E. McMurry
Chapter18: Ethers And Epoxides; Thiols And Sulfides
Section18.SE: Something Extra
Problem 62GP: The Zeisel method is an old analytical procedure for determining the number of methoxyl groups in a...
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Aldol Condensation: The Synthesis of 2'-Hydroxy-4-methoxychalcone
25 mg of your product and dissolve in MeOH (50 mL) using a 50 mL volumetric flask – stock solution. Take 0.5
mL of the stock solution and make up (in a volumetric flask) to 25 mL – Solution A. Take 5 ml of solution A and
make up to 25 mL with MeOH – solution B- and record spectrum. Then take 1 mL of solution A and make up
to 25 mL with MeOH – solution C- and again record spectrum. Plot the value of the absorbance at the Amax
versus concentration and using the Beer-Lambert relationship (Abs ɛcl)
calculate the extinction coefficient (ɛ) and please show graph
Transcribed Image Text:Aldol Condensation: The Synthesis of 2'-Hydroxy-4-methoxychalcone 25 mg of your product and dissolve in MeOH (50 mL) using a 50 mL volumetric flask – stock solution. Take 0.5 mL of the stock solution and make up (in a volumetric flask) to 25 mL – Solution A. Take 5 ml of solution A and make up to 25 mL with MeOH – solution B- and record spectrum. Then take 1 mL of solution A and make up to 25 mL with MeOH – solution C- and again record spectrum. Plot the value of the absorbance at the Amax versus concentration and using the Beer-Lambert relationship (Abs ɛcl) calculate the extinction coefficient (ɛ) and please show graph
ABS
人mar
A
•332
1-062
B .365
0.296
C .377
0.078
Transcribed Image Text:ABS 人mar A •332 1-062 B .365 0.296 C .377 0.078
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