10 50 40 Liquid (brine) 30 Salt 20 Ice - 10 liquid (brine) 10 liquid (brine) -20 - 10 Ice + salt -30 -20 NaCI 10 30 H2O 100 90 70 FIGURE P2.33 Composition, weight % Temperature, °C т Temperature, °F

Materials Science And Engineering Properties
1st Edition
ISBN:9781111988609
Author:Charles Gilmore
Publisher:Charles Gilmore
Chapter14: Material Selection
Section: Chapter Questions
Problem 5ETSQ
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Figure P2.33 shows a portion of the H2O-NaCl phase diagram .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?

10
50
40
Liquid
(brine)
30
Salt
20
Ice
- 10
liquid
(brine)
10
liquid
(brine)
-20
- 10
Ice + salt
-30
-20
NaCI
10
30
H2O 100
90
70
FIGURE P2.33
Composition, weight %
Temperature, °C
т
Temperature, °F
Transcribed Image Text:10 50 40 Liquid (brine) 30 Salt 20 Ice - 10 liquid (brine) 10 liquid (brine) -20 - 10 Ice + salt -30 -20 NaCI 10 30 H2O 100 90 70 FIGURE P2.33 Composition, weight % Temperature, °C т Temperature, °F
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