First slide

2nd Law of Thermodynaimcs

Question

Statement I: Enthalpy of graphite is lower than that of diamond.
Statement II : Entropy of graphite is greater than that of diamond.

Moderate

A

Statement I and Statement II are true.
B

Statement I is true and statement II is false.
C

Statement I is false and Statement II is true.
D

Statement I and Statement II are false.

Solution

(I) Graphite is the standard state for carbon hence enthalpy of graphite(zero) is Lower than that of diamond
(II) Graphite has layer lattice structure which is less compact more random than the structure of diamond
Hence entropy of graphite is greater than that of diamond

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