•
Approximately 250 new end-of-chapter problems
have been added, most of these in the cumulative and
challenge categories. As a result, the book now has about 20% more cumulative problems and about 50% more
challenge problems.
•
A new design
increases readability, clarity, and visual appeal. Readers will find the text itself easier to read, and
will also find the two and three column in-text examples easier to navigate and work through. The result is a cleaner,
crisper presentation of the material.
•
In chapter 18 (Electrochemistry), the presentation of the calculation of cell potentials has been changed
from E°
cell
= E°
oxidation
+ E°
reduction
to E°
cell
= E°
cathode
– E°
anode
, where E°
oxidation
is E°
cathode
and E°
reduction
is
simply – E°
anode
.
—Although the two methods are numerically and mathematically equivalent, user feedback shows that the
second method is conceptually superior because the driving force of an electrochemical cell really is a
difference, not a sum.
—Both ways give the same answer, but the difference method is a more conceptually accurate way to think
of the problem.
•
A new section on thermal energy transfer
has been added to chapter 6 (Thermochemistry). The addition of
this material (in section 6.4), as well as the corresponding new example and conceptual connection, gives students a
better foundation for understanding calorimetry.
•
The coverage of Coulomb’s law has been moved f
rom chapter 9 (Chemical Bonding I: Lewis Theory) to chapter 8 (Periodic Properties of the Elements).
The earlier introduction of Coulomb’s law, in section 8.3, allows a
better explanation of key concepts in chapter 8, including penetration, shielding, sub-level energy splitting in
multielectron atoms, and effective nuclear charge.
•
Chapter 12 (solutions) has been reorganized
so that all the colligative properties are now covered in one
section (12.6) entitled Colligative Properties: Vapor Pressure Lowering, Freezing Point Depression, Boiling
Point Elevation, and Osmotic Pressure.
A separate section (12.7) covers the colligative properties of strong
electrolyte solutions. The new organization groups conceptually similar concepts together and makes the chapter
progress more logically.
•
A new section has been added to chapter 17 (Free Energy and Thermodynamics)
in order to better describe
the concepts of microstates and macrostates. This addition to section 17.3 helps lay the foundation for a better
understanding of the concept of entropy.
•
The Solutions Manual has been thoroughly accuracy checked
and completely redesigned to improve student
ease of use.
•
Within MasteringChemistry®, the number of randomizable end-of-chapter problems has been greatly
increased,
and problems now feature both numerical and chemical randomization.