Molar mass of an ideal gas
Lab #4
Emission Spectroscopy and Flame Test
Date of Lab: 10/24/13
OBJECTIVE To observe a continuous spectrum, emission spectrum, and an absorption spectrum, and be able to distinguish among the three. To be able to identify metal ions by doing a flame test and looking at a spectrum. At the same time increasing the ability to use and understanding of lab equipment, in this case, a spectroscope. To be able to calculate the frequency and energy of certain frequencies of light.
PROCEDURE
Part 1: White light
a.) Starting with the incandescent light source, I took a spectroscope and aimed it toward the center of the light.
b.) Observe the spectrum created.
c.) I then, repeated the same process with the light coming from the fluorescent light source. Part 2: Gas Tubes
a.) I then moved to the gas tubes, starting with Helium. I placed myself at in front of the light tube & aimed the spectroscope for the center.
b.) Repeated process with the remaining gases, Ne and Hg. Part 3: Flame Test
a.) I turned the Bunsen burner to the desirable flame.
b.) I then took the Barium sample wooden splint.
c.) By placing the soaked part in the flame I observed the color of the flame.
d.) By observing the flame with the spectroscope I obtained the wavelength of the cation.
e.) Repeated the process with the remaining metal cat ions. (calcium, copper (ii), lithium, sodium, strontium, and cobalt (ii))
f.) Followed by the unknown metals.
DATA
Part 1: White light
1.) The light source that has a continuous spectrum is the incandescent light bulb. When I observed it with the spectroscope the colors are blended as in there are no abrupt border lines.
2.) The light source that has an absorption spectrum is the fluorescent light source. This one had the same colors as the incandescent light but it had black spaces in between.
3.) Continuous spectrum consists of a continuous set of emission lines side by side, with no gaps, and appearing as a smooth
Emission Spectroscopy and Flame Test
Date of Lab: 10/24/13
OBJECTIVE To observe a continuous spectrum, emission spectrum, and an absorption spectrum, and be able to distinguish among the three. To be able to identify metal ions by doing a flame test and looking at a spectrum. At the same time increasing the ability to use and understanding of lab equipment, in this case, a spectroscope. To be able to calculate the frequency and energy of certain frequencies of light.
PROCEDURE
Part 1: White light
a.) Starting with the incandescent light source, I took a spectroscope and aimed it toward the center of the light.
b.) Observe the spectrum created.
c.) I then, repeated the same process with the light coming from the fluorescent light source. Part 2: Gas Tubes
a.) I then moved to the gas tubes, starting with Helium. I placed myself at in front of the light tube & aimed the spectroscope for the center.
b.) Repeated process with the remaining gases, Ne and Hg. Part 3: Flame Test
a.) I turned the Bunsen burner to the desirable flame.
b.) I then took the Barium sample wooden splint.
c.) By placing the soaked part in the flame I observed the color of the flame.
d.) By observing the flame with the spectroscope I obtained the wavelength of the cation.
e.) Repeated the process with the remaining metal cat ions. (calcium, copper (ii), lithium, sodium, strontium, and cobalt (ii))
f.) Followed by the unknown metals.
DATA
Part 1: White light
1.) The light source that has a continuous spectrum is the incandescent light bulb. When I observed it with the spectroscope the colors are blended as in there are no abrupt border lines.
2.) The light source that has an absorption spectrum is the fluorescent light source. This one had the same colors as the incandescent light but it had black spaces in between.
3.) Continuous spectrum consists of a continuous set of emission lines side by side, with no gaps, and appearing as a smooth