Chemistry 111

1
Chemistry 111

• Ideal Gas Laws Experiment

2
Part A Determination of the Gas Constant

• Set up a lab stand with a burette clamp as shown.
  Use this lab stand for both Parts A and B.
• Fill the eudiometer tube with 6M HCl then over
  fill with distilled water and close with a
  rubber stopper.
• Wrap weighed Zn metal in copper gauze and place
  it under a small funnel in the bottom of the 800
  mL beaker. Fill beaker with water.
• Invert the eudiometer tube into the beaker,
  remove the stopper and place the tube opening
  over the small funnel.
• Remove 2/3 of the water from the beaker.

Burette Clamp
Eudiometer Tube
Lab Stand
800 mL Beaker
3
Part B Determination of the molar mass of an
Unknown Gas

• Turn the lab stand around so the Part A apparatus
  is at the back as shown here.
• Use a clamp to hold the drying tube, then connect
  the round flask to one end of the drying tube and
  the plastic bottle to the other end with the
  rubber stopper and glass pieces provided.
• The gas will be generated in the round flask and
  collected in the plastic Bottle.

Part A Apparatus
Drying Tube
Plastic Bottle
Wooden Block
Round Flask