Q.

The enthalpy of fusion of water is 1.435 kcal / mol. The molar entropy change for the melting of ice at 0°C is

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a

21.04 cal/mol/K

b

5.260 cal/mol/K

c

0.526 cal/mol/K

d

10.52 cal/mol/K

answer is C.

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Detailed Solution

ΔHfus=1.435kcal/mol
ΔSfus=ΔHfusTfus=1.435×103273=5.26cal/mole/K

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The enthalpy of fusion of water is 1.435 kcal / mol. The molar entropy change for the melting of ice at 0°C is