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Get Answers to all your Questions
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At absolute zero temperature, the entropy of a pure crystal is:
Zero
Positive
Negative
Any of above
Answers (1)
As we have learnt,
3rd Law Of Thermodynamics -
The entropy of any pure crystalline substance approaches zero as the temperature approaches absolute zero. This is called the third law of thermodynamics.
-
At any pressure, the entropy of every crystalline solid in thermodynamic equilibrium at absolute zero is zero.
-
It is impossible to reduce the temperature of any system to absolute zero by any process.
-
As the absolute temperature approaches zero, increment in entropy for isothermal process in crystalline solids approaches zero,
i.e. S=0 at T=0
Or
-
According to the third law of thermodynamics, the entropy of pure crystal is zero at absolute zero temperature.
Therefore, Option(1) is correct.
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