Liquid nitrogen, with a latent heat of fusion of LF=25.3 ×103 J / kg, LF=25.3 ×10^3 J / kg, so

step 1 Now in this question we are given this vehicle that contains liquid nitrogen and the mass of thi

Liquid nitrogen, with a latent heat of fusion of LF=25.3...

Liquid nitrogen, with a latent heat of fusion of $\mathrm{LF}=25.3 \times 103 \mathrm{~J} / \mathrm{kg}$, $L_{\mathrm{F}}=25.3 \times 10^{3} \mathrm{~J} / \mathrm{kg}$, solidifies at a temperature of $63 \mathrm{~K}$. What is the change in entropy of a 1.5-kg sample of liquid nitrogen as it transitions from a liquid to a solid?

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Entropy

Entropy is a thermodynamic quantity that measures the amount of disorder or randomness in a system. It is a state function and its change for a process can be calculated using the relation ?S = Q_rev/T for reversible processes, where Q_rev is the reversible heat exchanged and T is the absolute temperature.

Latent Heat

Latent heat refers to the amount of heat absorbed or released by a substance during a phase change at a constant temperature without changing its state. In the context of freezing or solidification, the latent heat of fusion is the heat released as the liquid transitions to a solid.

Phase Transition

A phase transition is the process in which matter changes from one state (or phase) to another, such as from liquid to solid. This process involves the exchange of latent heat and results in a change in entropy, reflecting the differences in molecular order between phases.

Temperature in Thermodynamics

Using temperature in thermodynamic calculations requires the temperature to be in absolute units (Kelvin) to correctly apply formulas such as ?S = Q_rev/T. This ensures that the entropy change is calculated accurately during phase transitions.

Transcript

Please give Ace some feedback