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Old 12-28-2005, 10:45 AM
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SmartyC SmartyC is offline
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Join Date: Dec 2005
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SmartyC is truly a scientist!
Lightbulb make salt!!

YOU WILL NEED:
Hydrochloric acid
50 mL graduated cylinder
100 mL beaker
distilled water
phenolphthalein solution in a dropper bottle
sodium hydroxide
glass stirring rod
2 eyeroppers
evaporating dish
magnifying lens

PROCEDURE
1. Put on you gloves. Measure 25mL of hydrochloric acid in a graduated cylinder, then pour it into the beaker. be careful when you rinse the graduated cylinder with distilled water to claen out any leftover acid.
CAUTION: If it spills on you immediately flush the area with water.

2. Add three drops of phenolpthalein indicator to the acid in the baeker. You will not see any thing yet.

3. Maesure 20mL of sodium hydroxide (base) in the graduated cylinder and add it slowly to the beaker with the acid. Use the stirring rod to mix the substance completely.
CAUTION: Sodium hydroxide is also corrosive if it spills wash with water.

4. Use an eyedropper to add more bas to the acid-base mixture in the beaker a few drops at a time. Be sure to stir the mixture after each few drops. Contiue adding drops of base until the mixture remains olored after stirring

5. Use another eyedropper to add acid to the beaker, ne drop at a tme, until the color just disappears after stirring

6. Pour the mixture carefully into an evaporating dish and place the dish where it can evaporate over night.

7. The next day there should be crystals so examie them with a magnifiying glass.

P.S. I did this project a month ago and it cost me a pretty penny.
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