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Multiple Bond Formation

Why does grap...

Question

Why does graphite have more entropy than diamond? Diamond is harder than graphite so it should have more entropy right?

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Solution

Dear Student

Entropy is the degree of disorder or randomness of the system,
Entropy is as: Gas > Liquid > Solid
In this case, diamond is harder than graphite.
So, the randomness of the system is more in graphite.
Hence, graphite has higher entropy than diamond.

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Q. Assertion :Enthalpy of graphite is lower than that of diamond. Reason: Entropy of graphite is lower than that of diamond.

Q. Assertion :Diamond is thermodynamically less stable than its allotrope graphite. Reason: Molar entropy of graphite is greater than that of diamond under similar conditions.

Q. The value of

Δ H_{t r a n s i t i o n}

C (g r a p h i t e) ⟶ C (d i a m o n d)

1.9 k J / m o l

25^{\circ} C

. Entropy of graphite is higher than entropy of diamond. This implies that:

Q. The value of

{Δ H}_{t r a n s i t i o n}

C (g r a p h i t e) ⟶ C (d i a m o n d)

1.9 k J / m o l

25^{o} C

and entropy of graphite is higher than entropy of diamond. This implies that:

Q. Assertion :Enthalpy of graphite is lower than that of diamond. Reason: Entropy of graphite is lower than that of diamond.

Read the above assertion and reason and choose the correct option regarding it.

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