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Q.

One mole of ice is converted into water at 273 K. The entropies of H2O(s) and H2O(l) are38.20  and 60.01Jmol1K1  respectively. The enthalpy change for the conversion is :

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a

59.54Jmol1

b

5954Jmol1

c

595.4Jmol1

d

320.6Jmol1

answer is B.

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Detailed Solution

ΔG=ΔHTΔS ; at equilibrium
 ΔG=0,ΔH=TΔS
Or  ΔH=273×(60.0138.20)=5954.13Jmol1

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