REPORT LAB No 6
NAME_______________________________ DATE________________
1. Oxidation of alcohols:
Alcohol
Condensed Formula
1⁰,
2
⁰, or 3⁰
After
chromic acid addition
Condensed Formula and
Name
of the product (if reaction)
Ethanol
2-propanol
2-methyl-2-propanol
Unknown
2. Oxidation of aldehydes and
ketone
s.
|
Compound |
Aldehyde or ketone |
Condensed Formula and Name of product (if reaction) |
|
Pentanal |
||
|
Hexanal |
||
|
Propanone |
||
|
Butanone |
3. Acidic properties of carboxylic acids. Neutralization reaction.
|
Compound |
Initial pH |
pH after 5 drops NaOH 5% |
pH after 5 more drops NaOH 5% |
|
Ethanoic Acid 5% |
|||
|
Propanoic Acid 5% |
Neutralization Equation:
CH3COOH + NaOH
CH3CH2COOH + NaOH
4. Esterification reaction.
|
Carboxylic Acid |
Alcohol |
Product Structure (Ester) |
Odor |
|
Salicylic acid |
Methanol |
||
|
Propionic acid |
Ethanol |
5. Precipitation (Coagulation) of Egg Albumin.
a) Heat.
|
Egg albumin solution before heating |
Solution after heating What change occurred? |
b) Alcohol.
|
Egg albumin solution
before adding ethanol |
Solution after adding ethanol What change occurred? |
6. Color test for proteins.
|
Test |
Observations |
|
Xanthoproteic |
|
|
Ninhydrin |
Questions:
1. Complete the following table:
|
Name |
General Structure |
Example of Condensed Formula |
|
|
Alcohols |
|||
|
Ethers |
|||
|
Aldehydes |
|||
|
Ketones |
|||
|
Carboxylic Acids |
|||
|
Ester |
2. Name and identify the following alcohols as primary, secondary, or tertiary.
| Structure |
1⁰, 2⁰, or 3⁰ |
|
CH3CH2OH |
|
|
⌂⌂ OH |
|
|
OH |
2
