Which of the following statements concerning entropy is/are true? On a per mole

Question

Which of the following statements concerning entropy is/are true? On a per mole basis, the solid form of a particular substance has a greater entropy than its gaseous form. On a per mole basis at a fixed temperature, larger gaseous molecules tend to have a greater entropy than smaller gaseous molecules because of a greater number of conformations over which to disperse energy. On a per mole basis, the liquid form of a particular substance has a greater entropy than the solid form of the substance. A) 1 only B) 2 only C) 3 only D) 2 and 3 E) 1, 2, and 3

Explanation / Answer

Answer is A) 1 only

Solids tend to be more in order compared to liquid which is little bit loosely packed molecules when compared to solids and gas being more loosely packed it will be with most disorder

Entropy is probablity of order so

solid will have more entropy then liquid followed by gas which has the lowest entropy

According to this only 1 is correct where solid has more entropy than gas

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