I have answered all of the numbers except number 2. I could really use some help for number 2, I don't get it at all. thanks! The phase diagram below is that of Au-Ag system.11001065°C10501000960°CL+a9509005060708090100102030Au (%) Questions1. What maximum temperature is 90% gold alloy remains to be pure solid?2 Calculate the molar (atomic) percentage of this alloy if 25% of its mass (welght) is silver at 1000°C.3. At 960°C how much mass of silver must be added to gold, with a mass of 156 grams, to attain 35%gold?4. Does this system display peritectic transformation? Why?

The objective of this question is to calculate the maximum temperature at which a 90% gold alloy…

Answered: The phase diagram below is that of…

The phase diagram below is that of Au-Ag system. 1100 1050 1000 950 900 960°C 0 10 20 30 L 2 L+a 50 Au (%) 60 70 a 80 90 1065%

Physical Chemistry

2nd Edition

ISBN:9781133958437

Author:Ball, David W. (david Warren), BAER, Tomas

Publisher:Ball, David W. (david Warren), BAER, Tomas

Chapter6: Equilibria In Single-component Systems

Section: Chapter Questions

Problem 6.50E

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Question

I have answered all of the numbers except number 2. I could really use some help for number 2, I don't get it at all. thanks!

The phase diagram below is that of Au-Ag system.
1100
1065°C
1050
1000
960°C
L+a
950
900
50
60
70
80
90
100
10
20
30
Au (%)

Questions
1. What maximum temperature is 90% gold alloy remains to be pure solid?
2 Calculate the molar (atomic) percentage of this alloy if 25% of its mass (welght) is silver at 1000°C.
3. At 960°C how much mass of silver must be added to gold, with a mass of 156 grams, to attain 35%
gold?
4. Does this system display peritectic transformation? Why?

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