EXPERIMENTS IN GENERAL CHEMISTRY II
LABORATORY MANUAL FOR CHEM 118
Department of Chemistry Tulane University New Orleans, Louisiana 70118 (504) 865-5573
1. Class Policies and Procedures
1.1 Lab Manual and Notebook
The lab manual "
EXPERIMENT 3 MW by Freezing Point Depression
Molecular Weight Determination by Freezing Point Depression
In experiment 3, the freezing point depression constant for water will be evaluated and used to determine the molecular
EXPERIMENT 4 Kinetics of the Iodine Cock reaction
Kinetics of the Iodine Clock reaction
In experiment 4, the rate law of the Iodine Clock reaction is established, and a value for the activation energy of the reaction is der
Brent Koplitz Exam #3 April 26,2006 You must show thinking where appropriate! (15pts) (12 pts) 1. 2.
Useful / Useless Information
R = 8.31 x
kJ/mole ' "K
q,(for AgBr) = 5.0 x 10-13
K, (for AgCI) = 1.8 x 10"' ,
J Q J -
t O O Z 'tzrlD=W Z# -x3
(6p t s )
Give the appropriate equilibrium constant expression for the reactions shown below.
ZFe(s) + 3H,O(g)
(12P ~ S ) 1 b,)
Brent Koplitz Exam #1 February 13, 2006 You must show thinking where appropriate to receive full credit!
Useful / useless Information
K, = 1.86 "Cimolalfor water
K, = 0.51 "C/molal for water
N, = Avogadro's # = 6.0
EXPERIMENT 6 Acid-Base Titrations
In experiment 6, concentrations of various acidic solutions, as well as a value for the acid ionization constant Ka of a weak acid will be determined.
Seleced Prelab Questions
Selected Prelab Questions
1. What is the absorbance when transmittance is O%? What is the absorbance when transmittance is 100%? 2. A substance is known to have at its wavelength of maximum absorption a molar e
EXPERIMENT 7 Thermodynamics of Solution
Thermodynamics of Solution
In experiment 7, values for enthalpy and entropy of solution of an inorganic salt will be determined, based on the temperature dependence of its solubility p
EXPERIMENT 2 Paper Chromatography
In experiment 2, plant pigments dissolved in an organic solvent extract will be separated using chromatographic techniques.
In 1906 the Russian botanist
EXPERIMENT 1 Absorption Spectrophotometry
In experiment 1, we establish the amount of a reductant in a redox reaction using absorption spectrophotometry.
In physics and in physica
EXPERIMENT 5 Determination of an Equilibrium Constant
Determination of an Equilibrium Constant
In experiment 5, the equilibrium constant for the formation of a transition metal complex ion will be determined.
EXPERIMENT 9 Oscillating Reactions
In experiment 9, the oscillatory Briggs-Rauscher reaction is investigated in terms of different initial conditions and different organic substrates.
Brent Knphtz Exam # 1 Febmq15, 2001 You must show thbling where appropriate!
Useful /useless Information
R, = 1.86 "C/molalforwater
K, = 5.12
%, = 0.51 "C/molalfor water
& = 2.53 " C l d a lfor benzene