Chem 182 Expt 1 Visible Spectroscopy Lab Report.docx - Chem...

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Chem 182Shih-Heng ChenSummer 2018Th 12:30Experiment#2: Beer-Lambert LawObjectivesThe objective for the first part of the experiment is to calculate Rydberg constant by measuring the wavelengths for different colors of light. The second part of the experiment is for calculating absorbance of each light by measuring %T at different wavelength. The objective for the third part of is to observe the light using spec20.MethodTo calculate the Rydberg constant, first use blue spectrometer to measure the wavelength of four different color. Then calculate 1/ λ. Transition value can be calculated by the equation 1/nlow2 – 1/nhigh2. Use excel to create the graph by inputting these data. The slope of the graph will be theRydberg constant. To calculate the absorbance of each light, measure the %T of each light at different wavelength using Spec – 20. Then use the equation A=log(%Tbackground/%Tsample). Use Excel to draw the graph of wavelength and absorbance to determine the maximum

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