Evaluation of the Gas Law Constant
Vanessa Gale
Formal Lab:
Evaluation of the Gas Law Constant
Dr. Monzyk
Due 06/25/2012
Purpose:
The purpose of this lab is to evaluate the gas law constant. The ideal gas law is represented as PV=nRT, where R represents the gas law constant. To determine R, we must find the other parameters, P, V, n and T through the experiment.
Equipment and Materials:
Large beaker
Ring stand
Clamp
Copper wire
100 mL eudiometer tube
Magnesium (Mg) ribbon
M6 H2SO4 (Sulfuric Acid)
Wash bottle filled with distilled water
Procedure:
First I cut a piece of Mg ribbon and used steel wool to rub off the MgO (magnesium oxide). I then used the scale to determine when I had approximately 0.0440g of Mg. I then wrapped the Mg with copper wire so that none was showing, but left a tail of copper wire.
In the fume hood, I added 8 mL of M6 H2SO4 to the eudiometer tube. I used the wash bottle to carefully and completely fill the tube with water, being sure not to mix the water with the sulfuric acid. Then I placed the copper covered Mg into the tube and left the tail end hanging over the edge. I placed the rubber stopper into the end. I held my finger over the hole in the stopper, gently flipped over the tube and place the stopped end into the water. I removed my fingers and then clamped the tube into place.
When the Mg stopped producing bubbles, I gently tapped the tube on the bottom of the beaker to ensure no bubbles were trapped and read the level of the liquid. I recorded my results.
The same procedure was repeated in three additional trials.
Data: | Trial 1 | Trial 2 | Trial 3 | Trial 4 | Mass of Mg, g | 0.0446 | 0.0448 | 0.0434 | 0.0454 | Number of Moles of Mg | 0.001834 | 0.001842 | 0.001785 | 0.001867 | Initial Eudiometer Reading, mL | 0 | 0 | 0 | 0 | Final Eudiometer Reading, mL | 45.4 | 47.9 | 42.5 | 43.6 | Volume of Gas, L | 0.0454 | 0.0479 | 0.0425 | 0.0436 | Barometric Pressure, mmHg | 761.238 | 761.238 | 761.238 | 761.238 |
Formal Lab:
Evaluation of the Gas Law Constant
Dr. Monzyk
Due 06/25/2012
Purpose:
The purpose of this lab is to evaluate the gas law constant. The ideal gas law is represented as PV=nRT, where R represents the gas law constant. To determine R, we must find the other parameters, P, V, n and T through the experiment.
Equipment and Materials:
Large beaker
Ring stand
Clamp
Copper wire
100 mL eudiometer tube
Magnesium (Mg) ribbon
M6 H2SO4 (Sulfuric Acid)
Wash bottle filled with distilled water
Procedure:
First I cut a piece of Mg ribbon and used steel wool to rub off the MgO (magnesium oxide). I then used the scale to determine when I had approximately 0.0440g of Mg. I then wrapped the Mg with copper wire so that none was showing, but left a tail of copper wire.
In the fume hood, I added 8 mL of M6 H2SO4 to the eudiometer tube. I used the wash bottle to carefully and completely fill the tube with water, being sure not to mix the water with the sulfuric acid. Then I placed the copper covered Mg into the tube and left the tail end hanging over the edge. I placed the rubber stopper into the end. I held my finger over the hole in the stopper, gently flipped over the tube and place the stopped end into the water. I removed my fingers and then clamped the tube into place.
When the Mg stopped producing bubbles, I gently tapped the tube on the bottom of the beaker to ensure no bubbles were trapped and read the level of the liquid. I recorded my results.
The same procedure was repeated in three additional trials.
Data: | Trial 1 | Trial 2 | Trial 3 | Trial 4 | Mass of Mg, g | 0.0446 | 0.0448 | 0.0434 | 0.0454 | Number of Moles of Mg | 0.001834 | 0.001842 | 0.001785 | 0.001867 | Initial Eudiometer Reading, mL | 0 | 0 | 0 | 0 | Final Eudiometer Reading, mL | 45.4 | 47.9 | 42.5 | 43.6 | Volume of Gas, L | 0.0454 | 0.0479 | 0.0425 | 0.0436 | Barometric Pressure, mmHg | 761.238 | 761.238 | 761.238 | 761.238 |