In: Chemistry
HOW DOES TEMPERATURE EFFECT THE VOLUME OF A GAS in Bunsen Burner AND WHY?
Procedure:
Set up the apparatus as shown. Your teacher will show you how to put the glass tubing and thermometer through the rubber stopper without breaking them or hurting yourself.
The glass tubing and thermometer should reach halfway into the flask. The slug of colored water should be about 5 mm long. At the start of the activity it should be just above the stopper. Your teacher will tell you how to get it there if you have trouble. Mark the position of the slug.
4. Warm the flask gently. Do so by wrapping your hands around it for a few minutes. Mark the new position of the slug of water. Record the temperature. Then record the position of the slug above the stopper.
5. Light the Bunsen burner using the methods discussed in the pre lab when learning how to manipulate a Bunsen burner.
6. Warm the flask still more by moving it over a Bunsen burner with a Blue flame. Touch the flask from time to time so you won’t overheat it.
(*Caution - The thermometer will break if the temperature goes above its range.) Continue marking the positions of the slug for 3 or 4 more temperatures. Do so until the temperature is in the 70ºC – 80 ºC range.
7. Observe the slug of water as the flask cools.