CHEMISTRY 1032 (Michel) – INFORMATION FOR EXAM I
You will have 55 minutes to complete the exam.
Exam I will cover the material I lectured on from chapters 11 and 12.
There will be a variety of different type
of problems – multiple choice, true-false, fill in the blank, brief explanations, ordering, and numerical
problems.
Some questions will taken directly from (or will be very similar to) examples and problems in the
textbook, the
MasteringChemistry
homework, the
MasteringChemistry
practice problems, and the ones I did
in class. You will be given a periodic table and a few equations and constants (see below).
The following
study guide and suggested problems should help you prepare for the exam.
In addition, you should try the
practice exam questions that appear at the end of this document.
Chapter 11
Section 11.2
: You should know the 3 main states of matter, their various properties such as shape, density and
volume, and the phase changes.
Section 11.3
: Know all the different types of intermolecular forces (IMFs) and their relative strengths; be able
to draw diagrams showing IMFs between molecules/ions/atoms; be able to predict relative orders of boiling
points.
Try Example (and For Practice) 11.1, 11.2; Problems (at end of chapter): 49 – 54, and 118.
Section 11.4
: Be able to explain how IMFs play a role in surface tension, viscosity (shape important) and
capillary action. Try problems 59 – 64.
Section 11.5
: Understand vaporization and condensation, and enthalpy (heat) of vaporization (
∆
H
vap
).
Try
Example 11.3 (and the ones for more practice).
Understand what is meant by a dynamic equilibrium, and the
conditions necessary for when a liquid boils. Know the difference between boiling points and normal boiling,
and how boiling points correlate with
∆
H
vap
and external pressures.
Be able to determine boiling points from
vapor pressure curves and also
∆
H
vap
from a plot of lnP vs. 1/T (the Clausius-Clapeyron equation); be able to
calculate a vapor pressure (or a temperature) using the two-point form of the C-C equation.
Try Example 11.4
and 11.5 (and the ones for more practice) and problems 55, 56, 65 – 70, 75, and 76.
Section 11.6
:
Know what is meant by sublimation, deposition, melting (fusion) and freezing, and
∆
H
fus
, and
why
∆
H
vap
is always greater
∆
H
fus
for a given compound.
Section 11.7
:
Be able to draw heating curves (like Fig. 11.36) and to calculate the heat absorbed (or released)
when a substance undergoes one or more phase changes.
Try problems 77, 78, 81, and 82.