Composition (at% Bi) 0 20 40 60 80 100 300 271°C 232°C L 200 ? + L Bi + L 139°C ? Sn 21 57 100 ? Sn + Bi Bi ? Sn 13°C 0 0 20 40 60 80 100 (Sn) Composition (wt% Bi) (Bi) Temperature (°C)

          Composition (at% Bi)
0 20 40 60 80 100
300
271°C
232°C L
200
? + L
Bi + L
139°C
? Sn 21 57
100
? Sn + Bi Bi
? Sn 13°C
0
0 20 40 60 80 100
(Sn) Composition (wt% Bi) (Bi)
Temperature (°C)

Added by Jose L.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Adi S

07/07/2023

Step 1

25% Bi composition at equilibrium: -200C: Bi+L = 139 -100C: Bi+L = 57 -25C: Bi+L = 271 Show more…

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a. What are the compositions of the phases present at equilibrium when you take a liquid with composition 25 wt% Bi and cool it from 250°C to 150°C? b. Calculate the weight fraction of each phase from part a. c. Sketch the microstructure of the 25 wt% Bi sample at each of the following temperatures (assume slow cooling). Your sketches should be representative of how much of each phase is present. -200°C -100°C -25°C