Carolina Wasinger
Chemistry I
Ms. Bowser
11/17/2015

Pre-lab

Purpose:

To create different smells within a lab experiment. 

Procedure:

1. Fill 50 mL beaker with 30 mL of water. 
2. Drop into the beaker, a boiling stone. 
3. Put the beaker on a hot plate and bring water to a boil.
4. Label test tubes with the following numbers: 1, 2 and 3
5. Using the wafting technique, smell the acids and record in a data table. Add 5 drops of the respective carboxylic acids to each of the test tubes. 
6. Again, using the wafting technique, smell the alcohols and record in the data table. Add ten drops of each alcohol to to each tube (look in the following table). 

Test tube:             Carboxylic Acid                Alcohol

1                             acetic acid                       isopentanol

2                             acetic acid                       butanol

3                             butyric acid                     ethanol

1. Add 1 drop of the sulfiric acid (H2SO4) to each test tube.
2. Place a boiling stone into each test tube. 
3. Carefully smell each compound by using the wafting technique. 
4. Slice a plastic pipette to a length that is shorter than that of the test tube. Put the pipette into the test tube so that the bulb somewhat seals off the test tube. 
5. Put the test tubes into boiling water n heat for 5 minutes, or until the compund no longer smells putrid. 
6. After, remove the test  tubes from the water and turn off the hot plate. 
7. Take the pipette out from the test tube. There should only be vapors in it. 
8. squeeze the pipette and waft the vapors, Record the smell on the data sheet.
9. Dispose properly of chemicals. 

Materials:

• 50 mL beaker
• Hot plate. 
• 3 microscale test tubes. 
• Boiling stones. 
• 3 plastic pipettes. 
• scissors 
• pencil 
• organic acids and alcohols ( Acetic Acid, Butyric Acid, concentrated Sulfiic acid, Ethanol, Isopentanol, Butanol.)

Safety:

Hot Plate; Hot plate can burn. Do not  directly touch the heated surface of the hot plate and use tongs to move items on and off the hot plate. 

Boiling Stones: Be sure to handle with tongs. Boiling stones can cause burns. 

Acetic Acid, can be erosive to the skin. Keep out of eyes and off skin and clothing. 

Butyric Acid, Is corrosive to skin, combustible and flammable. Keep away from open flames. 

Sulfiric Acid. Is corrosive to skin and can cause burns to skin. 

Ehanol: