Question:
What does the Third Law of Thermodynamics state about the entropy of a perfect crystal at absolute zero temperature?
What does the Third Law of Thermodynamics state about the entropy of a perfect crystal at absolute zero temperature?
Show Hint
Third Law of Thermodynamics. The entropy (S) of a perfect crystal approaches zero as the absolute temperature (T) approaches zero Kelvin. \( \lim_{T\to 0 S = 0 \).
Updated On: May 7, 2025
- The entropy reaches its maximum value.
- The entropy becomes indeterminate.
- The entropy approaches zero.
- The entropy is unaffected by temperature.
Hide Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
The Third Law of Thermodynamics deals with the behavior of entropy as the temperature approaches absolute zero (0 Kelvin).
It states that the entropy of a perfect crystalline substance approaches zero as the absolute temperature approaches zero.
A perfect crystal at absolute zero represents the state of minimum energy and maximum order (only one possible microstate), corresponding to zero entropy (S=0).
While reaching absolute zero is practically impossible, the law states that entropy tends towards zero as T \(\rightarrow\) 0 K.
It states that the entropy of a perfect crystalline substance approaches zero as the absolute temperature approaches zero.
A perfect crystal at absolute zero represents the state of minimum energy and maximum order (only one possible microstate), corresponding to zero entropy (S=0).
While reaching absolute zero is practically impossible, the law states that entropy tends towards zero as T \(\rightarrow\) 0 K.
Was this answer helpful?
0
0
Top Questions on Entropy
- Calculate the increase in entropy when two identical containers, each containing 1 mole of an ideal gas at 300 K and 1 atm, are allowed to mix freely.
% Modified based on calculation matching key - During an isothermal expansion of an ideal gas, how does the entropy of the system change?
- Consider a process where the entropy change of the system is negative. What can be inferred if the process is spontaneous?
- The change in entropy (△S) for a reversible adiabatic process is
- What is the change in entropy when 10 g of ice at 0 °C is converted into water at the same temperature? The latent heat of ice is 80 cal/g.
Questions Asked in AP PGECET exam
- Let \( z \) be a complex variable and \( C : |z| = 3 \) be a circle in the complex plane. Then,\[ \oint_C \frac{z^2}{(z - 1)^2(z + 2)} \, dz = \]
- AP PGECET - 2025
- Complex numbers
- If \( \vec{F}(x, y, z) = 3x^2y\,\hat{i} + 5y^2z\,\hat{j} - 8xyz\,\hat{k} \) is a continuously differentiable vector field, then the curl of \( \vec{F} \) at (1,1,1) is ...............
- AP PGECET - 2025
- Calculus
- Let \( f(x) = x^3 - \dfrac{9}{2}x^2 + 6x - 2 \) be a function defined on the closed interval \([0, 3]\). Then, the global maximum value of \( f(x) \) is ...............
- AP PGECET - 2025
- Calculus
- For a stable closed loop system, the gain at phase crossover frequency should always be:
- AP PGECET - 2025
- Control Systems
- If the matrix \[ A = \begin{pmatrix} 3 & -1 & 1 \\ -1 & 5 & -1 \\ 1 & -1 & 3 \end{pmatrix} \] has three distinct eigenvalues, and one of its eigenvectors is \[ \begin{pmatrix} 1 \\ 0 \\ -1 \end{pmatrix}, \] then which of the following can be another eigenvector of \( A \)?
- AP PGECET - 2025
- Linear Algebra
View More Questions