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Question

Enthalpy change for the process,
H2O(ice)H2O(water) is 6.01KJmol1. The entropy change of 1 mole of ice at its melting point will be:

A
12JK1 mol1
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B
22JK1 mol1
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C
100JK1 mol1
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D
30JK1 mol1
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Solution

The correct option is B 22JK1 mol1
Solution:- (B) 22J/molK
Given:-
ΔH=6.01kJ/mol=6010J/mol
As the melting point of ice is 0, i.e., 273K
Now using,
ΔS=ΔHT
ΔS=6010273=22J/molK
Hence the entropy change of 1 mole of ice at its melting point will be 22J/molK.

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