OnlineCBT
Chemistry · THERMODYNAMICS
हिन्दीConsider the following statements regarding the Third Law of Thermodynamics: (A) The entropy of any pure crystalline substance approaches zero as \( T \rightarrow 0\text{ K} \). (B) The entropy of solutions and supercooled liquids is zero at \( 0\text{ K} \). (C) The third law allows the calculation of absolute values of entropy of pure substances from thermal data. (D) Perfect order exists in pure crystalline solids at absolute zero. Which of the above statements are correct?
Correct answer · Option 2
(A), (C) and (D) only
Explanation
The entropy of solutions and supercooled liquids is NOT zero at 0 K due to residual entropy; thus (B) is incorrect. (A), (C), and (D) are correct.
