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Tamil Nadu Board of Secondary EducationHSC Science Class 11

State the third law of thermodynamics. - Chemistry

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Question

State the third law of thermodynamics.

Short Note

Solution

The third law of thermodynamics states that the entropy of pure crystalline substance at absolute zero is zero. Otherwise, it can be stated as it is impossible to lower the temperature of an object to absolute zero in a finite number of steps. Mathematically,
`lim_("T"->0)` S = 0 for a perfectly ordered crystalline state.

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Third Law of Thermodynamics
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Chapter 7: Thermodynamics - Evaluation [Page 225]

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Samacheer Kalvi Chemistry - Volume 1 and 2 [English] Class 11 TN Board
Chapter 7 Thermodynamics
Evaluation | Q II. 17. | Page 225
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