Composition (at% Ni)20406080100160028001500Liquid1453°C26001400Solidus lineLiquidus line24001300a +LB12002200110020001085°C100020406080100(Cu)Composition (wt% Ni)(Ni)Figure Q3a Phase diagram of the Cu – Ni system.327°C300Liquid232C20041183°C18.361.997.8•C3110021144060100(PD)Composition (wt% Sn)(Sn)Figure Q3b Phase diagram of the Pb – Sn system.(3) aungeadueTemperature (°F) 3. a)Using Figure Q3a, 50 wt% Ni – 50 wt% Cu alloy is slowly cooled from 1400 to 1200 °C.i) At what temperature does the first solid phase form?ii) What is the composition of this solid phase?iii) At what temperature does the liquid solidify?iv) What is the composition of this last remaining liquid phase?The same composition of alloy is heated to a temperature within the a – liquid phaseregion. If the composition of the a phase is 70 wt. % Ni, determine thev) temperature of the alloyvi) composition of the liquid phasevii) mass fractions of both phasesb) In Figure Q3b, at Points B and C: 40 wt.% Sn – 60 wt.% Pb alloy at 150 °C,Page 1 of 3i) what are the phases present?ii) what are the compositions of the phases present?iii) mass and volume fractions?Knowing that the densities of Pb and Sn are 11.23 and 7.24 g/em³, respectively

"Since there are multiple sub-parts in this question and it is not mentioned that which one has to…

3. a) Using Figure Q3a, 50 wt% Ni – 50 wt% Cu alloy is slowly cooled from 1400 to 1200 °C. i) At what temperature does the first solid phase form? ii) What is the composition of this solid phase? iii) At what temperature does the liquid solidify?

3. a) Using Figure Q3a, 50 wt% Ni – 50 wt% Cu alloy is slowly cooled from 1400 to 1200 °C. i) At what temperature does the first solid phase form? ii) What is the composition of this solid phase? iii) At what temperature does the liquid solidify?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

100%

Composition (at% Ni)
20
40
60
80
100
1600
2800
1500
Liquid
1453°C
2600
1400
Solidus line
Liquidus line
2400
1300
a +L
B
1200
2200
1100
2000
1085°C
1000
20
40
60
80
100
(Cu)
Composition (wt% Ni)
(Ni)
Figure Q3a Phase diagram of the Cu – Ni system.
327°C
300
Liquid
232C
200
41
183°C
18.3
61.9
97.8
•C
31
100
21
14
40
60
100
(PD)
Composition (wt% Sn)
(Sn)
Figure Q3b Phase diagram of the Pb – Sn system.
(3) aungeadue
Temperature (°F)

3. a)
Using Figure Q3a, 50 wt% Ni – 50 wt% Cu alloy is slowly cooled from 1400 to 1200 °C.
i) At what temperature does the first solid phase form?
ii) What is the composition of this solid phase?
iii) At what temperature does the liquid solidify?
iv) What is the composition of this last remaining liquid phase?
The same composition of alloy is heated to a temperature within the a – liquid phase
region. If the composition of the a phase is 70 wt. % Ni, determine the
v) temperature of the alloy
vi) composition of the liquid phase
vii) mass fractions of both phases
b) In Figure Q3b, at Points B and C: 40 wt.% Sn – 60 wt.% Pb alloy at 150 °C,
Page 1 of 3
i) what are the phases present?
ii) what are the compositions of the phases present?
iii) mass and volume fractions?
Knowing that the densities of Pb and Sn are 11.23 and 7.24 g/em³, respectively

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