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Chromic acid test, Lucas test, Esterification, Iodoform, Acrolein test, and Fermentation, Assignments of Organic Chemistry

Chromic acid test, Lucas test, Esterification, Iodoform, Acrolein test, and Fermentation Observation table

Typology: Assignments

2021/2022

Available from 04/03/2022

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Name of Test
Test Solution
Reagents
Observations
CHROMIC ACID
n - butyl alcohol
H2CrO4
1. produced clear blue
solution
sec. butyl alcohol
H2CrO4
2. produced clear blue
solution
tert. butyl alcohol
H2CrO4
3. produced clear yellow
solution
LUCAS TEST
n - butyl alcohol
Zn in HCl
4. there are no changes
even after more than 15
minutes
sec. butyl alcohol
Zn in HCl
5. cloudy solution formed in
approximately 5 minutes
tert. butyl alcohol
Zn in HCl
6. cloudy solution formed
immediately
ESTERIFICATION
Ethanol
Acetic acid ( CH3 -COOH )
7. sweet fruity smell of
alcohol
IODOFORM
Ethyl alcohol
I2 & NaOH
8. positive test because of
the formation of a fine
yellow precipitate with an
antiseptic smell: CHI3
Triiodomethane
Propan- 1-ol
I2 & NaOH
9. negative test because it
produced a colorless
solution
Propan -2-ol
I2 & NaOH
10. positive test as it resulted
to a cloudy pale yellow solid
pf2

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Name of Test Test Solution Reagents Observations CHROMIC ACID n - butyl alcohol H 2 CrO 4

  1. produced clear blue solution sec. butyl alcohol H 2 CrO 4
  2. produced clear blue solution tert. butyl alcohol H 2 CrO 4
  3. produced clear yellow solution LUCAS TEST n - butyl alcohol Zn in HCl
  4. there are no changes even after more than 15 minutes sec. butyl alcohol Zn in HCl
  5. cloudy solution formed in approximately 5 minutes tert. butyl alcohol Zn in HCl
  6. cloudy solution formed immediately ESTERIFICATION Ethanol Acetic acid ( CH 3 - COOH )
  7. sweet fruity smell of alcohol IODOFORM Ethyl alcohol I 2 & NaOH
  8. positive test because of the formation of a fine yellow precipitate with an antiseptic smell: CHI 3 Triiodomethane Propan- 1 - ol I 2 & NaOH
  9. negative test because it produced a colorless solution Propan - 2 - ol I 2 & NaOH
  10. positive test as it resulted to a cloudy pale yellow solid

solution with an antiseptic smell ACROLEIN Glycerol KHSO 4

  1. The glycerol component of the molecule is dehydrated, resulting in the formation of acrolein, an unsaturated aldehyde with a strong, pungent odor. FERMENTATION Glucose Zymase from yeast
  2. substance formed: 2 ethanol molecules aqueous and 2 carbon dioxide molecules gaseous