At absolute zero, the entropy of a pure crystal is zero. This is

Question

At absolute zero, the entropy of a pure crystal is zero. This is (A) first law of thermodynamics (B) second law of thermodynamics (C) third law of thermodynamics (D) zeroth law of thermodynamics

Tardigrade Admin · Accepted Answer

The third law of thermodynamics states that, "The entropy of a perfectly crystalline substance at zero

K

or absolute zero is taken to be zero".

Δ S = 0 \int T C_{p} d ln T = 2.303 0 \int T C_{p} d lo g T

where,

C_{p} =

heat capacities and

T =

temperature between o

K

and

T K

.

Q. At absolute zero, the entropy of a pure crystal is zero. This is

first law of thermodynamics

second law of thermodynamics

third law of thermodynamics

zeroth law of thermodynamics

The third law of thermodynamics states that, "The entropy of a perfectly crystalline substance at zero K or absolute zero is taken to be zero". ΔS=0∫T​Cp​dlnT=2.3030∫T​Cp​dlogT where, Cp​= heat capacities and T= temperature between o K and TK.

The third law of thermodynamics states that, "The entropy of a perfectly crystalline substance at zero $K$ or absolute zero is taken to be zero".
$Δ S = 0 \int T C_{p} d ln T = 2.303 0 \int T C_{p} d lo g T$
where, $C_{p} =$ heat capacities and $T =$ temperature between o $K$ and $T K$ .