Answered: Using the information from the phase…

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

J 5

The Tin-Bismuth phase diagram is shown below. DSC was used to analyse three samples in the Sn-Bi system.

Sample 1 has the composition 40 wt% Bi – 60 wt% Sn,

Sample 2 has the composition 57 wt% Bi – 43 wt% Sn, and

Sample 3 has the composition 100 wt% Sn.

Using the information from the phase diagram, draw graphs of the expected DSC curves for the three samples on heating from 50°C to 300°C. Label the axes and curves

Temperature, °C
300
275
250
225
200
175
150
125 Sn
100
75
232°C
50
0
Sn
10
Sn + Liquid
20
21
Liquid
30
57
Sn + Bi
40
50 60
Wt.% Bismuth
143°C
70
Bi + Liquid
271°C
80
Bi
99
90 100
Bi

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