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Dante Essay

1963 words - 8 pages

1a.1b. The largest peak would have been created by the energy transition of an electron from HOMO to LUMO whereas the smaller peak would have been created by the energy transition of an electron from a lower energy level that is not the HOMO to an excited state.Another explanation for the creation of the smaller peak would be the interaction of the magnetic field generated from the spectrophotometer and the electrons of the atoms. However, since this does not frequently occur it would not generate a large peak.1c. When UV light hits the plastic, the degradation of the plastic under the UV light would result in a faulty transmission and inaccurate spectrum of absorbance.In order to see this ...view middle of the document...

06E-06

0.84564775

4

4.18E+04

2,2' C25H25N2I

4.99E-06

0.88385493

6

2.95E+04

2,2' C27H27N2I

4.99E-06

0.67185462

8

1.68E+04

4,4' C23H23N2I

1.01E-05

0.40029025

8

4.95E+03

4,4' C25H25N2I

4.99E-06

1.25485635

10

2.51E+04

4,4' C27H27N2I

4.99E-06

0.42982915

12

7.18E+03

3a.
b

N

Numerator

Denominator

Wavlength (m)

Wavelength (nm)

6

6

1.54164E-39

4.6382E-33

3.3238E-07

332.379788

10

10

4.28234E-39

7.2886E-33

5.8754E-07

587.54003

8

8

2.7407E-39

5.9634E-33

4.59587E-07

459.586868

12

12

6.16658E-39

8.6138E-33

7.15895E-07

715.894928

10

10

4.28234E-39

7.2886E-33

5.8754E-07

587.54003

14

14

8.39339E-39

9.939E-33

8.44491E-07

844.490869

3b. B predicts the wavelengths better than A since in A we assumed that the electrons were trapped in two walls of infinite potential energy, however since the electrons are delocalized onto these atoms, this isn't a realistic to expect. Since model B describes a more realistic model of the atoms and the pathway of the electrons, the predicted wavelengths will also be closer to the measured wavelengths as well.4a.4b.

Wavelength (m)

N

Numerator

Denominator

L (m)

2,2' C23H23N2I

4.72997E-07

6

2.1939E-39

2.1849E-21

1.0021E-09

2,2' C25H25N2I

5.5401E-07

8

3.3038E-39

2.1849E-21

1.2297E-09

2,2' C27H27N2I

6.57513E-07

10

4.7924E-39

2.1849E-21

1.481E-09

4,4' C23H23N2I

5.38982E-07

10

3.9284E-39

2.1849E-21

1.3409E-09

4,4' C25H25N2I

6.56494E-07

12

5.6549E-39

2.1849E-21

1.6088E-09

4,4' C27H27N2I

7.67985E-07

14

7.633E-39

2.1849E-21

1.8691E-09

5a.Figure3. Length of Box vs Number of Bonds for 2,2' DyesFigure4. Length of Box vs Number of Bonds for 4,4' Dyes5b. In reality, atoms are modeled in three dimensions. For this lab, we used values obtained from three-dimensional models in equations based on the one-dimensional particle in a box in order to calculate the bond length. Therefore, the values we obtained form our calculations are not completely accurate because the constants and equations are based on two different dimensions.6a. Model A is insufficient because it assumed that the ends of the boxes were the nitrogen atoms of infinite potential energy when in fact this is not true. The realistic model is more complicated and the electrons can travel beyond these nitrogen atom boundaries, which is why Model B becomes more accurate by including two extra bonds that the electrons can occupy...

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