The Application of Melting Points in Local Manufacturing
In class we learned about lattice energy and its connections to Coulombs law and
chemical bonding. Coulombs law is defined by the equation,
1 q1 q2
. We are also
aware that lattice energy is
The Pertinence of Chemical Reactions to Carbon Dioxide Emission and Capture
During Chemistry lecture, the class learned chemical reactions. Chemical reactions are
expressions used to demonstrate chemical change involving the restructuring of different
The Application of the Ideal Gas Law in Pressurized Equipment
In class we learned about the Ideal Gas Law, PV = nRT, which is essentially the
combined equation using Boyles Law, Charles Law, and Avogadros Law. It also applies GuyLussacs, but this was not
1) What answer should be reported, with the correct number of significant figures, for the
following calculation? (965.43 3.911) + 9413.4136
C) 1.32 104
D) 1.3 104
E) 1.319 104
2) If the walls in a room are 955 square feet in area, and
Chemistry 111A General Chemistry
Chapter 4 Part II
(J1-2010S-MC-5) Which of the following is NOT driving force of chemical
a. Formation of water
b. Formation of precipitate
c. Formation of gas
d. Color chang
1) Which of the following signs on q and w represent a system that is doing work on the
surroundings, as well as gaining heat from the surroundings?
A) q = +, w = B) q = -, w = +
C) q = +, w = +
D) q = -, w = E) None of
1. Lipoic acid is a coenzyme that accepts_.
B) Acetyl or acyl groups
2. Vitamin B1 is needed for_.
3. Pyruvate dehydrogenase complex and alpha ketoglutarate dehydrogenase complexes
have the following in common except_.
A) Both are in th
CHEM 441A, Spring 2017, Exam 3 Study Guide
Thurs 11 May
What to bring: Pencils/pens/erasers, calculator, help card (optional, 4 x 6 inches)
Help Card. Youre allowed to bring a help card with whatever information you want to include.
Do not incl
Experiment 2: Density of NaCl Solutions
The purposed of the experiment was aimed towards measuring the relative accuracy and
precision of a graduated cylinder, pipette, and burette using multiple sodium chloride (NaCl)
xperiment 3: Freezing Point Depression
By completing the experiment, the molar mass of a solid hydrocarbon was found in its molecular form.
Cyclohexane was used as the solvent during the experiment and the point at which it froze (crystals
at time t
Moles of Moles of
reacted at remaining
at time t
Experiment 10: Titration and Simulation of a Weak Acid
The purpose of this experiment is to reveal the possible limitations using the HendersonHasselbalch equation under the titration of a strong base with a weak acid (unknown).
Experiment 8: Synthesis and Analysis of Nickel Complex
Introduction: The purpose of this experiment is to obtain the corresponding percentages of Ni,
NH3, and Cl-. This is done through the synthesis of a hexaamminenickel (II) chloride complex
Experiment 6: Methyl Acetate Kc
The purpose of this experiment is to calculate the equilibrium constant of the hydrolysis of
methyl acetate (CH3COOCH3) in water.
In order to conduct this experiment, 50 mL of 0.10 HCl and 3mL of
Experiment 9: Dissociation of a Weak Acid
The purpose of this experiment is to find the dissociation constants for two weak monoprotic
Before commencing the experiment, the pH meter first had to be calibrated. The experi
Experiment 5: Le Chteliers Principle
The purpose of this experiment was to apply the concept of Le Chateliers Principle to five
different chemical reactions. Le Chateliers Principle states When a system in a chemical
Experiment 4: Rate Constant for Hydrolysis of t-Butyl Chloride
The purpose of this experiment was to determine the rate constant, k, for the hydrolysis of
tertiary-butyl chloride. This was moreover obtained with the use of Excel,
Chemistry Writing Assignment
The study of chemistry can appear to be an area that is not accessible to everyone and can
only be applied and utilized by those who are physical scientists or have taken a career path
within the same realm of science. However
Experiment 7 Spectrophotometry
During the experiment, the absorbance will be measured to determine an absorption spectrum.
Part A will measure the extinction coefficient of a transition metal. Part B will be used to
determine the n value for
~re~ 5 9/-freR.ci9J/\.-;
(, 11-1 #
~:e~. . . ~./.
H0. ~l\~. ~ ~ "
Students at the University of North Dakota measured visible light absorbance of various food
colorings. Replicate measurements of the absorbance o
~:e~ . . . f.\.
\-.? \ l,\)
fY~.~ JJ.,:. .
A 500 mL solution was prepared by dissolving 25 mL of methanol (CH30H, FM 32.04,
density=0.791 g/mL) in chloroform. Find the molarity of the methanol.
Soo ~L >?0
C \-\ .3 o 1-I
s~:. . .0:1~.: .~.,P1.~: .
Mercury (I) iodate Hg2(I03)2 dissociate into ions: Hg/+ and I0 3-. Write the dissociation
reaction. Find the conc~ntration of Hg/+ and I03- in a saturated solution of Hg2(I03)2.
Ksp (Hg2(I03)2) =1.3xl0- 18
Part 1. Standardization of the silver nitrate solution
1. The weight of a standard NaCl sample: 0.7092 g
2. The concentration of NaCl solution (250 mL flask) 4.8542 X 10-2 mole/L
Molarity NaCl =
Lab #5 Complexometric Titrations of Aluminum and Magnesium in Homemade Antacid
Protocol #1: Determine Total Aluminum and Magnesium Content
Let EDTA is Y4-, an metal is Mn+
1. Actual mass of powder unknown A sample: 1.0067g
1. pH of the buffer needed to prepare: 10.60
2. Reagents selected to make a buffer:
Reagent 2 [A-]
Reagent 1 [AH]
Molar mass (g/mol)
3. Reasons for selecting the rea
Part 1. Standardization of the silver nitrite solution
AgNO3 (aq) + NaCl (aq) = NaNO3 (aq) + AgCl (s)
1. Weight of NaCl sample: 0.7684g
2. Molecular weight of NaCl: 58.44 mole
3. Number of moles of NaCl in the sample (I): 0.7684g / 58.44 mole
Professor: Dr. Lopez
Preparation of Acetylferrocene, by Friedel-Crafts Acylation and Purification by Column
The purpose of this experiment was to perform an electrophilic aromatic substitution.
Methyl benzoate was nitrated to obtain the product methyl nitrobenzoate. Once the reaction has
occurred, crude product has been filtrated a