State third law of thermodynamics. Give ‘two’ uses.

1.	State third law of thermodynamics. Give ‘two’ uses.
Answer» Third law of thermodynamics states that the entropy of a perfectly ordered crystalline substance is zero at absolute zero of temperature. Its two uses are : (a) To determine the absolute entropy of any substance either in solid, liquid or gaseous state at any desired temperature. (b) To calculate thermodynamic properties.

Answer»

Third law of thermodynamics states that the entropy of a perfectly ordered crystalline substance is zero at absolute zero of temperature.

Its two uses are :

(a) To determine the absolute entropy of any substance either in solid, liquid or gaseous state at any desired temperature.

(b) To calculate thermodynamic properties.

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State third law of thermodynamics. Give ‘two’ uses.

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