Chemistry Worksheets - Chem 340, Fall 2013 Page 3
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19Problems:
3.1 Calculate the difference in molar entropy (a) between liquid water and ice at −5°C, (b)
between liquid water and its vapour at 95°C and 1.00 atm. The differences in heat capacities on
−1
−1
−1
−1
and −41.9 J K
melting and on vaporization are 37.3 J K
mol
mol
, respectively. Distinguish
between the entropy changes of the sample, the surroundings, and the total system, and discuss the
,later flip T
spontaneity of the transitions at the two
temperatures.Confusing since flip T
/TT/T
f
f
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