An Examination of the Copper Cycle with a Sad Sad Ending
Hank Grier*, Rachael Maguire
5801 S Ellis Ave, Chicago, IL 60637
Introduction:
The purposes of this experiment are threefold. We will achieve these purposes through a series of
reactions involving c
Problem Set #8 Solutions: Problems 1-8
1. (a) V = nTR/P = 1 mol x 273K x 0.0821 L atm mol-1 K-1/ 1 atm = 22.4 L
S = KBln= (R/NA) ln (VN) = nRlnV = 1 mol x 8.3145 J mol-1 K-1 x ln 22.4 = 25.85 J K-1
So the entropy for each gas is 25.85 J K-1
(b) The final
Calorimetry
Hank Grier*, Rachael Maguire
5801 S Ellis Ave, Chicago, IL 60637
Introduction:
The purposes of this experiment exist in two parts with a focus on three methods. This lab
focuses on gaining a better understanding of heat and energy, specificall
Calorimetry
Hank Grier*, Rachael Maguire
5801 S Ellis Ave, Chicago, IL 60637
Introduction:
The purposes of this experiment exist in two parts with a focus on three methods. This lab
focuses on gaining a better understanding of heat and energy, specificall
Using Gravimetric Analysis to Assess an Unknown Chloride Salt in
Solution
Hank Grier*, Rachael Maguire
5801 S Ellis Ave, Chicago, IL 60637
Introduction:
The goal of this lab is to provide an introduction to the analytical method of gravimetric
analysis. T
Oxygen Content of Air
Hank Grier*, Louisa Warnke, Jacqueline Kloos
5801 S Ellis Ave, Chicago, IL 60637
Introduction:
The purpose of this lab is straightforward, to experimentally obtain a value for the percentage of
oxygen in air by volume near the surfac
Estimating Avogadros number
Hank Grier*, Rachael Maguire
5801 S Ellis Ave, Chicago, IL 60637
Introduction:
The purposes of this lab are two-fold. The first is to gain an experimental understanding of how
to estimate Avogadros number, which is done by dete
A Watched Egg Never Floats
Hank Grier*, Rachael Maguire
5801 S Ellis Ave, Chicago, IL 60637
Introduction:
The purposes of this lab are to become familiar with a variety of volumetric glassware, and with
the measurements made with such apparatus. In this l
A Watched Egg Never Floats: Determining the Density of an Egg via
Floating and Volumetric Methods
Hank Grier*, Rachael Maguire
5801 S Ellis Ave, Chicago, IL 60637
Introduction:
The purposes of this lab are to become familiar with a variety of volumetric g
1.64. (See Example 110.) A white crystalline compound that
contains only iodine, potassium, and oxygen is puried. A
mass of 117.41 g of pure compound is found on analysis to
contain 15.97 g of potassium and 51.83 g of iodine. What
is the empirical formula
Problem Set #6 Solutions
1.
(+5 equating two quantities; +5 for temperature)
2.
(+5 molar conversions; +5 for molar heat capacities)
3. MW of salicylic acid = 138.12
Heat/mol = (28.91 C-23.11 C)/1.00 g) x (9.37 KJ/ 2.48 C) x 138.12 g/mol = 3026.72 KJ/mol
Chapter 10 - Intermolecular forces, solids, liquids, and phase transitions
Problem 1
A flask of water is connected to a vacuum pump. A few moments after the bump is turned on, the water
begins to boil. After a few minutes, the water begins to freeze. Expl
Problem Set 7 Solutions
1. a) There are three transformations involved as following:
A. H2 (g) >2 H (g)
Ho (H2) = 436 kJ/mol
B. C (s) +2 H2 (g) > CH4 (g)
Hof (CH4) = -74.81 kJ/mol
C. C (s) > C (g)
Ha = 716.68 kJ/mol
From A x 2 - B + C, we can deduct to
Solutions to Problem Set #3
1. According to the ideal gas law, pV=nRT, we can convert the equation to: n= pV/RT
Since the mass and volume of the gas doesnt change, n and V are constant, so
p1/ T1= p2/T2 (+5)
p1=957 mm Hg = 957/760 atm = 1.26 atm ; T1=25 o
Problem Set #8 Solutions
1. (a) V = nTR/P = 1 mol x 273K x 0.0821 L atm mol-1 K-1/ 1 atm = 22.4 L
S = KBln= (R/NA) ln (VN) = nRlnV = 1 mol x 8.3145 J mol-1 K-1 x ln 22.4 = 25.85 J K-1
So the entropy for each gas is 25.85 J K-1
(b) The final volumn is 22.4
Final Exam Review Notes
General Chemistry 111 - Fall 2013
Instructor: Prof. David Mazziotti
Exam Date: Monday, December 9, 2013 (10:30-12:20)
1. Modern Atomic Theory: (a) John Daltons Atomic Theory, (b) J. J.
Thomsons cathode ray tube to measure the q/m r
Problem Set #8 Solutions
1.
2.
(a=+3, b=+3, c=+4)
3.
1
(+2 for each of the S)
4.
(a=+3; b=+2; c=+2; d=+3)
5.
2
(+3 for H; +3 for S; +4 for G)
6.
(a=+4, b=+3, c=+3)
7.
(+5 for temperature effect on S; +5 for volume effect on S)
8.
3
(a=+4, b=+3, c=+3)
4