D. OXIDATION OF ALCOHOLS 1. Place 1 mL of each of the following alcohols in separate clean test tubes: ethanol, benzyl alcohol and ethylene glycol. 2. To each alcohol sample, add 2 mL of acidified potassium dichromate solution. Mix by shaking gently and observe any changes. Warm gently if necessary to start the reaction. Record results in the table below. Alcohol Color changes observed Ethyl Alcohol Benzyl Alcohol Glycerol Equations for the oxidation of each alcohol: a.
D. OXIDATION OF ALCOHOLS
1. Place 1 mL of each of the following alcohols in separate clean test tubes: ethanol,
benzyl alcohol and ethylene glycol.
2. To each alcohol sample, add 2 mL of acidified potassium dichromate solution.
Mix by shaking gently and observe any changes. Warm gently if necessary to start
the reaction.
Record results in the table below.
Alcohol Color changes observed
Ethyl Alcohol
Benzyl Alcohol
Glycerol
Equations for the oxidation of each alcohol:
a. _________________________________________________________________
b. _________________________________________________________________
c. _________________________________________________________________
E. FORMATION OF ESTERS
1. To 2 mL of ethyl alcohol, add 1 mL of glacial acetic acid and 2 drops of
concentrated sulfuric acid (CAUTION). Warm gently, then pour into a beaker
containing 20 mL of ice water previously made alkaline with sodium carbonate
solution. Stir well and note the odor.
Equation: _________________________________________________________________
2. To 2 drops of benzyl alcohol, add 6 drops of acetyl chloride (CAUTION!). Warm
gently to start the reaction. Cautiously add 20 mL of water and note the odor.
Equation: _________________________________________________________________
3. Repeat no. 2 using glycerol instead of benzyl alcohol. Result: ____________________
Equation: _________________________________________________________________
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