Question

The residual entropy of n2o at ok according to iii law of thermodynamics

Answer 1

Answer:

The Third law of thermodynamics is sometimes stated as follows, regarding the properties of closed systems in thermodynamic equilibrium:

The entropy of a system approaches a constant value as its temperature approaches absolute zero.

The constant value is called the residual entropy of the system.

Answer 2

Answer:

The residual entropy of the gas $N_{2}O$ is not 0 at 0 K.

Explanation:

Entropy

Entropy of a substance is the order of randomness present in it. The materials that are crystals have less entropy as compared to gases because crystal is more ordered than gases. The entropy change is defined as the ratio of the heat transferred to the temperature of the substance.

Third law of thermodynamics

The third law of thermodynamics states that the entropy of the substance attains a constant value at 0 K. Perfect crystals have zero entropy at 0 K.

Residual entropy

Residual entropy is the remaining value of entropy at 0 K temperature.

Here, $N_{2}O$ is a gas and at room temperature the entropy is very high. When it crystallises its entropy becomes less as compared to its gaseous state. But it does not form the perfect crystal. So, the residual entropy of this gas is not zero at 0 K according to the third law of thermodynamics.