Chemistry 2374a - Assignment 1.
Quiz: September 25
1. A vessel of volume 22.4 dm3 contains 2.0 mol H2 and 1.0 mol N2 at 273.15 K. Calculate (i) the
mole fraction of each component, (ii) their partial pressures, and (iii) their total pre
Chemistry 2374A - Thermodynamics
MIDTERM EXAM 2013 (= 2014 PRACTICE EXAM)
TIME: TWO HOURS
This exam contains 20 questions of equal weight.
A periodic table, a data/equation sheet, and three blank pages are attached at the back,
these may be
Change in mols of N2 vs
Extentitive Reaction ( in m
nge in mols of N2 vs Extentive reaction
Extentitive Reaction ( in mols)
l ' ‘ .
Name: 1 Student Number: A ' /
PRINT family name ﬁrst
UNIVERSITY OF VICTORIA
EXAMINATIONS DECEMBER 2013
Chemistry 245 Introductory Physical Chemistry
Duration: 3 hours
Instructor: M. G. Mofﬁtt
Print your name and student number in the spaces above.
Processes are acts that change the state of the system (heating, performance of work,
chemical reactions, addition of matter, etc.). We are going to deal with energy
exchange between system and surroundin
The first law is a statement of the conservation of energy in a thermodynamic system.
The first law does not impose any other restriction on the way that a process occurs.
We observe that many processes have a te
Motivation for introducing Gibbs and Helmholtz Free
Entropy is a useful criterion for spontaneity in isolated systems.
However, experimentally the majority of processes are studied under constant T and P
1. Calculate the entropy change when argon at 250 C and 1.00 bar in a container of volume 0.500
dm3 is allowed to expand to 1.000 dm3 and is simultaneously heated to 100 0 C.
2. Calculate the change in the entropies of the system and the s
Partial molar quantities
We shall consider mainly nonelectrolyte solutions where the solute is not present
in the form of ions, e.g. sucrose dissolved in water. Since we discuss mixtures we
need to introduce part
If a spark is applied to a mixture of H2 (g) and O2 (g), an explosion occurs and water is formed.
The gaseous water is cooled to 1000 C. Calculate the entropy change when 2 mol of gaseous H2 O
is formed at 1000 C and 1 atm from H2 (g) and
Chemistry is the science of matter and changes that it can undergo.
Physical chemistry is a discipline of chemistry that concerns with the physical
principles that underlie chemistry.
It answers questions concerning the structure of matter an
Chemistry 2374a - Practice problems
(1) One mole of an ideal monoatomic gas initially at 300 K is expanded from an initial pressure
of 10 atm to a nal pressure of 1 atm. Calculate E, q, w, and the nal temperature T2 for this
expansion carried out a
MIDTERM EXAM - Oct. 21, 2015
DURATION: TWO HOURS
1. Place your student ID card on your desk.
2. Only non-programmable calculators are allowed. No other electronic devices (phones, etc.)
may be in your possession, even for ti
Quiz 1 - Chemistry 2374a - Sept. 25, 2015
Name and Student Number
Chemical constants and units
Avogadro’s number N A = 6.022 x 1023 rnol“1
Gas constant R = 0.0821 L.atm/mol.K = 8.314 J/mol.K = 8.31 x 103 g.m2/32.mol.K
Units of pressure 1 atm = 101,
Chemistry 2374a - Answers to Assignment 2.
Quiz: October 9
1. (a) During a hypothetical process, the entropy of a system increases by 125 JK1 while the
entropy of the surroundings decreases by 125 JK1 . Is the process spontaneous?