Spectroscopy & 'Particle in a box'

# Spectroscopy & 'Particle in a box' - Spectroscopy...

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Group Participants: Jason Christian, Connor Dennis, Josh Istas, Amelia Bray Section Number: 416 Meeting Time: 7:30-10:20 September 7, 2006 TA: Amanda Reeves Introduction When a wave is run through certain materials, the spectrum is separated by a quantized amount and distance. For a photon to be absorbed, its energy must match the energy difference between the initial state and some excited state of the molecule. As objects become smaller, classical mechanics can no longer explain their behaviors. Here, quantum mechanics takes part. Using Schrödinger’s equation, we can solve almost any wave function for Energy. Experimental Experiment A1 Observe the colors of Cu(NO3) 2 , Ni(NO3) 2 , and Co(NO3) 2 . Next, calibrate the spectrometer with a cuvette of water. Set the spectrometer to absorbance mode and insert Cu(NO3) 2 and record Λ max . Measure and record Λ max for Ni(NO3) 2 , and Co(NO3) 2 . Then, set the spectrometer to transmission mode and measure and record Λ max for Ni(NO3) 2 , Co(NO3) 2 , and Cu(NO3) 2 . Make sure to save all spectrum graphs. Experiment A2 First, add 5 mL of either 0.10 M Cu(NO3) 2 or 0.10 M Ni(NO3) 2 to an two empty beaker. Next, add 5 mL of water to one of the beakers to create a 0.05 M solution, and add 15 mL of water to the other beaker to create a 0.025 M solution. Place about 3 mL of the original solution and 3 mL from each beaker into separate three separate cuvettes. Calibrate the spectrometer again with water if necessary.

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Spectroscopy & 'Particle in a box' - Spectroscopy...

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