Question: Melts in the system Pb-Sn exhibit regular solution behavior. At 473C, activity of Pb is 0.043 (Pb= 0.043) in a liquid solution of XPb=0.15. Calculate

Melts in the system Pb-Sn exhibit regular solution behavior. At 473C, activity of Pb is 0.043 (Pb= 0.043) in a liquid solution of XPb=0.15. Calculate the activity of Sn in the liquid solution of XSn=0.50 at 500C.

a. 0.27

b. 0.38

c. 0.44

d. 0.41

e. 0.33

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