UPSC Combined Geo-Scientist, Mains · 2017 · Mains Paper II
Q11(a). Deriving the freezing-point depression ΔTf = Kf·m
Question
Derive ΔTf = Kf·m (symbols have their usual meanings) using the thermodynamic concept of chemical potential. Mention all assumptions and approximations at proper places.
Model answer
The free solution for 2017 answers questions 1, 2, 3, 4, 5, 8, 9, 12, 13 and 15, the ones picked in its time plan. This part is not answered on the site yet. New answers are announced on Telegram.
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Coversdepression of freezing pointcryoscopic constantchemical potentialcolligative properties
All parts of Question 11
- 11(a) Deriving the freezing-point depression ΔTf = Kf·m10 marks
- 11(b) Entropy signs for a cooling cup of tea10 marks