Chem 222 Quantitative Chemical Analysis, Fall 2014
Partial Examination Second Module
Dr. Joaqun Rodrguez Lpez
Instructions: Show all work necessary to arrive to an answer in the provided booklet. Clearly identify the
question that you are answering and yo
Quantitative Analysis, Chem 222
Amit Patel, Dr. Joaquin Rodriguez Lopez
Homework 1, Fall 2013
Instructions: Hand in the results for this assignment on separate sheets of paper, staple them
when handing in. CLEARLY label each problem according to its numbe
Quantitative Analysis, Chem 222
Dr. Joaquin Rodriguez Lopez
Homework 1, Fall 2015
Hand in: Monday August 31, beginning of class
Reading: Recommended Chapters from Harris textbook: 0, 1, and 3. Chapter 2 is optional.
1. List all the steps in the analytical
Quantitative Analysis, Chem 222
Dr. Joaquin Rodriguez Lopez
Homework 2, Fall 2015
Hand in: Monday September 14th, beginning of class
Statistics
1.Sketch a Normal distribution and indicate graphically the population mean (or average) and
standard deviation
Quantitative Analysis, Chem 222
Dr. Joaquin Rodriguez Lopez
Homework 2, Fall 2015
Hand in: Monday September 14th, beginning of class
Statistics
1.Sketch a Normal distribution and indicate graphically the population mean (or average) and
standard deviation
University of Illinois at Urbana-Champaign
School of Chemical Sciences
Quantitative Chemical Analysis Lecture
CHEM 222, Fall 2015
Schedule:
MW 1:00-1:50 pm, Architecture Building 120
Instructor:
Dr. Joaquin Rodriguez-Lopez
joaquinr@illinois.edu, Office ho
Chem 222 Quantitative Chemical Analysis
Partial Examination Second Module
Dr. Joaqun Rodrguez Lpez
Instructions: Show all work necessary to arrive to an answer in the provided booklet. Clearly identify the
question that you are answering. When reaching a
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Chem 222 Quantitative Chemical Analysis, Fall 2015
Partial Examination Second Module
Dr. Joaqun Rodrguez Lpez
Instructions: Show all work necessary to arrive to an answer in the provided booklet. Clearly identify the
question that you are answer
(some)
Statistics
Dr. Joaqun Rodrguez Lpez
Quantitative Chemical Analysis
Fall 2015
1
and Popcorn
Take out paper, pencil and your i-clicker and lets count.
Do not look at your neighbors counts! How many kernels popped?
A) Less than 170
D) 250-290
B) 170-
Chem 222 Quantitative Chemical Analysis
Partial Examination — First Module
Dr. Joaquin Rodriguez Lopez
Instructions: Answer the questions below in the booklet provided to you, in order and clearly identifying
the problem being solved. Show all work necess
Chem 222 Quantitative Chemical Analysis,
Second Module Dr. Joaqun Rodrguez Lpez
2014 Exam
1.
a) pH = 5.95 - you should use the simplest approximation. Notice also that glycine is an aminoacid, and
will likely dissolve in its zwitterionic form.
b) This is
[7.
Chem 222 Quantitative Chemical Analysis
Partial Examination — First Module
Tuesday October 2'“, 2013
instructions: Answer the questions below in the booklet provided to you, in order and
clearly identifying the problem being solved. Show all work nece
How close are we from
Samples will be limited, but we can trust the Central
Limit Theorem and obtain metrics from a discrete
number of points.
We define uncertainty as a function of 1) the Normal
error distribution, 2) the standard deviation, and 3)
th
List of essential topics towards the final exam
Chem 222, Fall 2015
Dr. Joaquin Rodriguez Lopez
Take this document only as a suggestion of the very essential that you should study or know. Some items
are described as skills and some as topics. There will
Quantitative Analysis, Chem 222
Dr. Joaquin Rodriguez Lopez
Homework 1, Fall 2015
Hand in: Monday August 31, beginning of class
Reading: Recommended Chapters from Harris textbook: 0, 1, and 3. Chapter 2 is optional.
1. List all the steps in the analytical
Chemical Equilibrium I
how ions behave in solution
Dr. Joaqun Rodrguez Lpez
Quantitative Chemical Analysis
Fall 2016
1
What is this guy doing?
A) Just soaking my pictures so keep
them fresh
B) A chemical reaction
C) Advertising this you cannot do
with yo
Quantitative Analysis, Chem 222
Homework 2 key, Fall 2013
1: Acids/Bases
1.1 a) Unlike the other hydrogen halides, HF exhibits a form of intermolecular forces called hydrogen
bonding, which greatly increases the stability of the undissociated form.
b) 0.0
5. For this question, you needed to draw your own schematic of the spectrum of light (hand-drawn
tables are also acceptable). An example of a schematic is shown below.
For investigations of the valence electronic transitions of a molecule, ultraviolet-vis
Michael Christofersen
Module 3 Test
Chemistry 222
Dr. Rodriguez-Lopez
1 A) See attachment
B) Alkaline error of pH measurement occurs in solutions containing a low proton
concentration and a high concentration of alkali metals (most commonly sodium). This
Quantitative Analysis, Chem 222
Dr. Joaquin Rodriguez Lopez
Exam 1: Solutions
1.
A. Na+ ISE is more sensitive than Mg 2+ ISE because it has a larger slope. Each electrode
will only respond to either Mg 2+ or Na+, making them selective. A calibration curve
Spectrophotometry
Dr. Joaqun Rodrguez Lpez
Quantitative Chemical Analysis
Fall 2016
The electromagnetic spectrum
Molecular
rotations
Molecular
vibrations
Electronic
Transitions
(valence)
Nuclear electronic
transitions
E = energy
c = speed of light in vacu
Chem 222 Quantitative Chemical Analysis
Partial Examination First Module
Wednesday, October 1st, 2014
Instructions: Answer the questions below in the booklet provided to you, in order and
clearly identifying the problem being solved. Show all work necessa
Case Study #1
Your team was hired by NASA to design the algorithm to be followed
by the new Life Rover. Because of the long delay in communications
between the earth and mars, this rover will need to perform
experiments on its own.
The Life Rover carrie
Mass Spectrometry (MS)
CHEM 222
Amit Patel
What is Mass Spectrometry?
Analytical technique
Investigate the isotopic masses of atoms/molecules
in a sample
Mass-to-charge ratio (m/z) based ion separation
Utilized to:
Quantify
Elucidate chemical struct
Analytical Equivalence
Dr. Joaqun Rodrguez Lpez
Quantitative Chemical Analysis
Fall 2016
1
Titrations
Congratulations, you have
just demystified acid-base
titrations!
Equivalence point vs.
Endpoint, Volumetric
changes!
Detection method? Indicator
dye v
Acid/Base Equilibria
Dr. Joaqun Rodrguez Lpez
Quantitative Chemical Analysis
Fall 2016
1
Theories and definitions
Lewis: Acids is an electron acceptor, base is an
electron donor.
Brnsted and Lowry: Acid is a proton donor,
base is a proton acceptor.
Arr
Chelates and
complexometry
Dr. Joaqun Rodrguez Lpez
Quantitative Chemical Analysis
Fall 2015
1
Complexes and Nobel prizes
Other Notable, and in your book:
Potassium channels, 2003
The G protein complex How analytes (neurotransmitters, drugs, hormones)
are
Buffers
Dr. Joaqun Rodrguez Lpez
Quantitative Chemical Analysis
Fall 2016
1
Definition
A buffer results from the mixture of a weak
acid or base and its conjugate.
Ka =
logKa =log[H+]+log( )
-log[H+] = -logKa +log( ) pH = pKa +log( )
Henderson-Hasselbalch