Resistance of a conductivity cell filled with 0.1 mol / L KCl is 100 . If
the resistance of the same cell when filled with 0.02 mol / L KCl solution
is 520 , calculate the conductivity and molar conductivity of 0.02 mol /
School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus
Physical Chemistry CHEM230
1. A first-order chemical reaction causes the concentration of a reagent to fall by a factor of 11
over a period of 11 minutes. Det
QUESTION 1: Spectroscopy (20 Marks)
Draw and label a block diagram for a single-beam spectrometer
that might be used for uv -vis molecular absorbance:
1.2.1 Define the following terms:
CHEM230: Physical Chemistry Tests 2014
25 marks/ 45 minutes
Section A: Spectroscopy
Define the terms: (a) Molar absorptivity and (b) Vibrational relaxation
A compound has one strong absorbance peak at a wavelength of 30020 cm -1.
Chemistry 215 Fundamentals of Analytical Chemistry
March 24, 2004
SEE EQUATIONS AND DATA ON LAST PAGE
PART I. DEFINITIONS (12 Points)
Define the following terms as they relate to the topics covered in this course.
1. Emission (3
SCHOOL OF CHEMISTRY & PHYSICS
CHEM 230: PHYSICAL CHEMISTRY TEST TWO 2015
ANSWER ALL THE QUESTIONS in the space provided.
R = 8.314 J K-1 mol-1
STICK BAR CODE
Use the following data and Kirchhoffs equation to calculate H of for O
1. If b = 0.347 liter/mole, what is the concentration if
a. the absorbance is 0.362?
b. the % transmittance is 63.2?
2. If the transmittance is 50.8% in a 1.00 cm cell, what is the absorbance in a 5.00 cm cell?