J 5A Molar Volume Lab Molar volume is the volume occupied by one mole of gas collected at standard...
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J 5A Molar Volume Lab Molar volume is the volume occupied by one mole of gas collected at standard temperature and pressure or STP.
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Transcript of J 5A Molar Volume Lab Molar volume is the volume occupied by one mole of gas collected at standard...
J 5A Molar Volume Lab
Molar volume is the volume occupied by one mole of gas collected at standard temperature and pressure or STP.
Materials NeededEudiometer
400 ml beaker
Ring stand
Buret clamp
Two hole rubber stopper
Copper wire
Chemicals Needed
Magnesium ribbon, 3.5 – 4.0 cm length
6 M Hydrochloric Acid
Read the procedure. Assemble all equipment.
Copper Wire
Magnesium ribbon
Measure the magnesium ribbon.
Magnesium ribbon
Use an analytical balance to get the mass of the magnesium ribbon.
Magnesium
Pour 10 ml of 6M HCl directly into the eudiometer. Use the graduations on eudiometer to measure.
Fill the eudiometer all the way to the brim with distilled water.
Curl the magnesium ribbon and secure to the copper wire.
The magnesium is attached to the copper on the rubber stopper.
Magnesium
Magnesium ribbon
The rubber stopper is placed in the end of the eudiometer.
The eudiometer is inverted in a beaker of water.
Allow the magnesium ribbon and the HCl to react in the eudiometer until the reaction is complete.
Bubbles begin to form at the magnesium ribbon.
Bubbles
Increased Bubbles
As the reaction advances the bubbles become more intense.
Pocket of Gas
As gas forms, the water is pushed out of the eudiometer through the holes in the rubber stopper.
Read the ml
This is the amount of gas that has been collected in the eudiometer.
Place the eudiometer in a large graduated cylinder filled with water.
Keep one finger over the holes in the rubber stopper when placing the eudiometer in the graduated cylinder.
Level inside tube
Level inside cylinder
Make the water level inside tube be on the same level as the water level in the graduated cylinder.
The two levels are the same for the final reading.
Final reading for the volume of the gas in the eudiometer.
Final reading
Read the barometric pressure
Mercury level
700 mmHg
800 mmHg
Level of mercury
700 mmHg
54 mmHg
Take the reading on the thermometer.
Final CalculationsRead the volume of the gas collected in the eudiometer and record in the data table.
Record the barometric pressure.
Record the room temperature.
Determine the water vapor pressure using a water vapor pressure table.
