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प्रश्न
The standard molar entropy of \[\ce{H2O (l)}\] is 70 JK–1 mol–1. Will the standard molar entropy of \[\ce{H2O (s)}\] be more, or less than 70 JK–1 mol–1?
उत्तर
The standard molar entropy of \[\ce{H2O (l)}\] is 70 JK–1 mol–1. The solid form of \[\ce{H2O}\] is ice. In ice, molecules of \[\ce{H2O}\] are less random than in liquid water. Thus, molar entropy of \[\ce{H2O (s)}\] < molar entropy of \[\ce{H2O (l)}\]. The standard molar entropy of \[\ce{H2O (s)}\] is less than 70 JK–1 mol–1.
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