ACCESS CODE W/E TEXT CONNECT
5th Edition
ISBN: 9781260162660
Author: BAUER
Publisher: MCG
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Textbook Question
Chapter 1, Problem 2QP
Match the key terms with the following descriptions.
(a) �le smallest particle of an element that retains �le characteristic chemical properties of that element a change in which substances are converted into new substances that have compositions and properties different from those of the original
(b) substances
(c) anything that occupies space and is perceptible to the senses
(d) a substance composed of two or more elements combined in de�nite proportions
(e) a combination of atoms of one or more elements
(f) a process Characterized by Changes only in �le physical properties of a substance not in its composition
(g) the physical
(h) �le energy possessed by an object because of its position
(i) a tentative explanation for the properties or behaviour of matter that accounts for a set of observations and can be tested
(j) the energy possessed by an object because of its motion
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111
States of Matter
Understanding conceptual components of the enthalpy of solution
0/5
Ge
A small amount of acetonitrile (CH, CN) is dissolved in a large amount of water. Imagine separating this process into the four stages sketched below. (These
sketches show only a portion of the substances, so you can see the density and distribution of atoms and molecules in them.)
CH,CN
H₂O
B
88
C
Use these sketches to answer the questions in the table below.
The enthalpy of solution AH is negative
soln
when CH3CN dissolves in water. Use this
information to list the stages in order of increasing
enthalpy.
Would heat be absorbed or released if the system
moved from Stage C to D?
What force would oppose or favor the system
moving from Stage C to D? Check all that apply.
1
absorbed
O released
neither absorbed nor released.
none
O ionic bonding force
covalent bonding force…
In a system with an anodic overpotential, the variation of ŋ as a function of
the current density:
1. at low fields is linear 2. at higher fields, it follows Tafel's law
Find the range of current densities for which the overpotential has the same
value as when calculated for cases 1 and 2 (maximum relative difference of
5% with respect to the behavior for higher fields). To which overpotential
range does this correspond?
Data: 10 = 1.5 mA cm², T = 300°C, ẞ = 0.64, R = 8.314 J K 1 mol¹ and F = 96485
C mol-1.
Indicate 10.6 with only one significant figure.
Chapter 1 Solutions
ACCESS CODE W/E TEXT CONNECT
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