Name: _
Chem 379 Fall, 2013
Quiz 1
1. (5 points) A student wants to determine as precisely as possible the intensity of a
certain monochromatic light source relative to another monochromatic source. The
frequencies of the two sources are well separated, s
Name: _
Chem 379 Fall, 2012
Quiz 2 (10 points)
1. (5 points) Use the Ritz-Balmer equation to derive an expression for the ionization
energy of any single-electron atom.
We can use the Ritz-Balmer equation to describe the change in energy associated with
a
Name: _
Chem 379 Fall, 2013
Quiz 5
1. Theory and practice (5 points): Kuhns empirical equation for conjugated systems of
( p + 3+)
the type we will be studying in this experiment is ( nm ) = 63.7
( p + 4)
2
. Suppose
you are taking the spectrum of a dye w
Name: _
Chem 379 Fall 2013
Quiz 7
1. Theory and practice (5 points): The figures below (marked a, b, c) show the
vibrational levels of the ground electronic state (v) and of the first excited electronic state
(v) of a diatomic molecule, such as I2. By use
Name: _
Chem 379 Fall, 2013
Quiz 6
1. Data Analysis (5 points): For each of the three dyes in Experiment 3, determine the
wavelength of maximum absorbance. Use this and your knowledge of the chemical
structures to determine the three values of . Discuss t
Name: _
Chem 379 Fall, 2013
Quiz 5
1. Theory and practice (5 points): Kuhns empirical equation for conjugated systems of
( p + 3+)
the type we will be studying in this experiment is ( nm ) = 63.7
( p + 4)
2
. Suppose
you are taking the spectrum of a dye w
Name: _
Chem 379 Fall, 2013
Quiz 4
Data Analysis (5 points): One of the peaks in your hydrogen atom spectrum was observed
around 6600 . Determine the exact location of that feature in each of your scans which
includes it. Calculate the average and the sta
Name: _
Chem 379 Fall, 2013
Quiz 2 (5 points)
1. (5 points) Download the Excel file from the course web page. The spreadsheet
contains data from last years mercury lamp experiment with the Sciencetech 9055
monochromator. For each of the two data sets, cal
Chemistry 379
Experiment 5: The Vibrational
Spectrum of SO2
Degrees of Freedom of Motion
For a single atom, whether isolated or part of a
molecule, any motion can be resolved into
components along the axes of a Cartesian
coordinate system.
Every atom has
Name: _
Chem 379 Fall, 2013
Quiz 12
1. Data Analysis (5 points): Use your data from the fundamental vibrational transition of
H35Cl to calculate e, Be, , and re. Use the Excel spreadsheet to show the best fit plot and
the regression values A, B and C as w
Name: _
Chem 379 Fall, 2013
Quiz 11
1. Theory and practice (5 points): On the energy level diagram below, indicate with two
different arrows the transitions associated with the index numbers m = 2 and m = -3.
Clearly label which arrow corresponds to which
Name: _
Chem 379 Fall 2013
Quiz 10
2. Data Analysis (5 points): Use your data from the absorption spectrum of SO 2 to
calculate the force constants kl and k/l2. Calculate both sides of the redundant force
equation to determine the goodness of fit.
Use the
Name: _
Chem 379 Fall, 2013
Quiz 9
1. Theory and practice (5 points): In a molecule such as SO2, the symmetric stretch and
the bending mode obey the selection rule J=+/-1, but for the asymmetric stretch,
J=0,+/-1. Given this and what you know about the ex