Pearson eText for Materials for Civil and Construction Engineers -- Instant Access (Pearson+)
4th Edition
ISBN: 9780137505586
Author: Michael Mamlouk, John Zaniewski
Publisher: PEARSON+
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Question
Chapter 2, Problem 2.33QP
(a)
To determine
Briefly explain how spreading salt on ice causes the ice to melt.
(b)
To determine
What is the temperature at which ice will start melting.
(c)
To determine
What is the eutectic temperature of the ice and salt combination.
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Students have asked these similar questions
Figure P2.33 shows a portion of the H,O-NaCl phase diagram.
10
Liquid
(brine)
Salt
Ice
+
-10 F
liquid
(brine)
liquid
(brine)
-20
Ice + salt
-30
NaCI
10
20
30
H2O 100
90
80
70
FIGURE P2.33
Composition, weight %
a. Using the diagram, briefly explain how spreading salt on ice causes the
ice to melt. Show numerical examples in your discussion.
b. At a salt composition of 10%, what is the temperature at which ice will
start melting?
c. What is the eutectic temperature of the ice and salt combination?
Temperature, °C
Sketch a phase diagram for two soluble components. Show the melting temperature of each element. Label all axes, curves, and zones.
A square high-density polyethylene [a = 158 × 10-6/°C] plate has a width of 295 mm. A 177 mm diameter circular hole is located at the
center of the plate. If the temperature of the plate increases by 45°C, determine:
(a) the change in width of the plate.
(b) the change in diameter of the hole.
Answer:
(a) Aw=
(b) Ad = i
i
mm
mm
Chapter 2 Solutions
Pearson eText for Materials for Civil and Construction Engineers -- Instant Access (Pearson+)
Ch. 2 - Define elastic and plastic behaviors at the micro...Ch. 2 - Prob. 2.2QPCh. 2 - Prob. 2.3QPCh. 2 - Describe the order in which electrons fill the...Ch. 2 - Prob. 2.5QPCh. 2 - Why do atoms maintain specific separations?Ch. 2 - Prob. 2.7QPCh. 2 - Prob. 2.8QPCh. 2 - Prob. 2.9QPCh. 2 - Two hypothetical metals are created with different...
Ch. 2 - Prob. 2.11QPCh. 2 - Prob. 2.12QPCh. 2 - Prob. 2.13QPCh. 2 - Prob. 2.14QPCh. 2 - Prob. 2.15QPCh. 2 - Prob. 2.16QPCh. 2 - Prob. 2.17QPCh. 2 - Determine the density of a hypothetical BCC metal...Ch. 2 - Determine the density of a hypothetical FCC metal...Ch. 2 - Prob. 2.20QPCh. 2 - Prob. 2.21QPCh. 2 - Prob. 2.22QPCh. 2 - Prob. 2.23QPCh. 2 - Prob. 2.24QPCh. 2 - Prob. 2.25QPCh. 2 - Prob. 2.26QPCh. 2 - Prob. 2.27QPCh. 2 - Prob. 2.28QPCh. 2 - Prob. 2.29QPCh. 2 - Prob. 2.30QPCh. 2 - Prob. 2.31QPCh. 2 - Prob. 2.32QPCh. 2 - Prob. 2.33QPCh. 2 - Prob. 2.34QPCh. 2 - Prob. 2.35QPCh. 2 - Prob. 2.36QP
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