draw the mechanism for when tert-pentyl alcohol reacts with iodoform test TestJones'Oxidation2,4-Dinitrophenyl-hydrazonesPurpaldlodoformTests forPrimary andsecondaryAlcohols,AldehydesAldehydesand Ketones29010AldehydesMethylKetones andMethylAlcoholsProcedureAdd 2 drops of the unknown to 0.5 mL of pure acetone in atest tube, and add to this solution 1 small drop of Jones'reagent (chromic acid in sulfuric acid). A positive test isformation of a green color within 5 sec upon addition of theorange-yellow reagent to a primary or secondary alcohol.Add 3 drops of the unknown to 0.5 mL of ethanol, and thenadd 0.75 mL of 2,4-dinitrophenylhydrazine reagent. Mixthoroughly and let sit for a few minutes. A yellow to redprecipitate is a positive test. Yellow derivatives are formedfrom compounds with isolated carbonyl groups and orange-red to red derivatives from aldehydes or ketones conjugatedwith double bonds or aromatic rings.Add 2 drops of your unknown to 1 mL of purpald reagent.Add one drop of 3% H₂O₂ and shake. Aldehydes develop apurple/brown color. This may take a few minutes. Ketoneswill remain colorless.Dissolve 4 drops of unknown in 2 mL of water (if watersoluble) or in 2 mL of 1,2-dimethoxyethane (if waterinsoluble). Then add 2 mL of 3M NaOH and slowly add 3 mLof the iodine solution. In a positive test the brown color ofthe reagent disappears, and the yellow iodoform separates.

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draw the mechanism for when tert-pentyl alcohol reacts with iodoform test

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter15: Solutions

Section: Chapter Questions

Problem 53QAP

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Question

draw the mechanism for when tert-pentyl alcohol reacts with iodoform test

Test
Jones'
Oxidation
2,4-
Dinitrophenyl-
hydrazones
Purpald
lodoform
Tests for
Primary and
secondary
Alcohols,
Aldehydes
Aldehydes
and Ketones
29010
Aldehydes
Methyl
Ketones and
Methyl
Alcohols
Procedure
Add 2 drops of the unknown to 0.5 mL of pure acetone in a
test tube, and add to this solution 1 small drop of Jones'
reagent (chromic acid in sulfuric acid). A positive test is
formation of a green color within 5 sec upon addition of the
orange-yellow reagent to a primary or secondary alcohol.
Add 3 drops of the unknown to 0.5 mL of ethanol, and then
add 0.75 mL of 2,4-dinitrophenylhydrazine reagent. Mix
thoroughly and let sit for a few minutes. A yellow to red
precipitate is a positive test. Yellow derivatives are formed
from compounds with isolated carbonyl groups and orange-
red to red derivatives from aldehydes or ketones conjugated
with double bonds or aromatic rings.
Add 2 drops of your unknown to 1 mL of purpald reagent.
Add one drop of 3% H₂O₂ and shake. Aldehydes develop a
purple/brown color. This may take a few minutes. Ketones
will remain colorless.
Dissolve 4 drops of unknown in 2 mL of water (if water
soluble) or in 2 mL of 1,2-dimethoxyethane (if water
insoluble). Then add 2 mL of 3M NaOH and slowly add 3 mL
of the iodine solution. In a positive test the brown color of
the reagent disappears, and the yellow iodoform separates.

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