emission spectroscopy

emission spectroscopy - Emission Spectroscopy Parker...

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Emission Spectroscopy Parker Ashbaugh Teacher: Yisheng Xu Chem. 104a Section: 45 3/29/07 Partners: Emily J., Ashley and Mike S. Abstract In this lab we looked at the wavelengths of light that are emitted by cations and sparklers using a technique known as spectroscopy. The wavelengths of hydrogen and helium were compared with reference and calculated values to test the accuracy of the sprectrometer. The wavelengths of the 7 known cations were compared with the wavelengths of the sparklers to determine their composition.
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Introduction The purpose of this lab is to identify the cations present in sparklers and to determine the accuracy of a spectrometer. Spectroscopy will be used to determine the relationship between color, light and wavelengths. “Light” is being referred to as electromagnetic radiation and is not continuous but is composed of small units called photons. A photon is emitted when an electron jumps a state and changed energy levels. There are two parts to this lab. The first half is to test the precision of the emission spectrometer by comparing the results of hydrogen and helium to reference and calculated results. We will be using the Rydberg equation to find out the actual wavelengths of Hydrogen. Secondly, we will find the wavelengths and intensities of 7 known cation metals to later use for comparison. Lastly, we will compare the wavelengths of the sparklers with the wavelengths of known metals to determine the sparkler composition.
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Calculations Calculations for Hydrogen: _Rydberg’s equation will be used to calculate the theoretical values of wavelength
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This note was uploaded on 04/03/2008 for the course CHEM 103a taught by Professor Weso during the Spring '08 term at Arizona.

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emission spectroscopy - Emission Spectroscopy Parker...

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