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Lecture 10

CHEM 235 Lecture Notes - Lecture 10: Boiling Chip, Aluminium Foil, Filter Paper


Department
Chemistry
Course Code
CHEM 235
Professor
Dana Zendrowski
Lecture
10

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NOTES:
Amyl acetate is prepared by the esterification of acetic acid and amyl alcohol (1-pentanol).
Equilibrium favors product, shifts to right with excess acetic acid.
Esterification: Conversion of carboxylic acids to esters using acid and alcohols. When a
carboxylic acid is treated with an alcohol and an acid catalyst, an ester is formed (along with
water).
Carboxylic acid: Acetic acid
Acid catalyst: Sulfuric acid
Alcohol: Amyl alcohol
Ester formed: Amyl acetate
EQUIPMENT:
25 mL graduated cylinder 250 mL separatory funnel
10 mL graduated cylinder 2 - 400 mL beakers
100 mL RB flask 50 mL Erlenmeyer flask + cork
50 mL RB flask glass filtering funnel
West condenser + tubing stillhead adapter
3 small beakers takeoff adapter
3 large test tubes + corks thermometer
25 mL Erlenmeyer flask + cork
CHEMICAL HAZARDS AND WASTE DISPOSAL
Acetic acid (glacial) – water-free (anhydrous) acetic acid
- CORROSIVE. Causes severe burns on contact with skin.
- Can be put in “liquid organic waste” container, or diluted with plenty of water and
washed down the sink
Amyl alcohol
- Irritating to eyes and respiratory passages
- Put in “liquid organist waste” container
Sulfuric acid (concentrated)
- EXTREMELY CORROSIVE. CAUSES SEVERE BURNS. Prevent contact with skin and eyes
- Dilute with plenty of water and wash down the sink.
NaHCO3
- Use cautiously
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