Which phase transitions result in a…

Chemistry Questions

Which phase transitions result in a decrease in the entropy of their surroundings? Select all that apply: A. Fusion B. Sublimation C. Vaporization D. Freezing E. Condensation F. Deposition

Short Answer

Condensation is the process of transforming gas into liquid, which decreases the system’s entropy while increasing the environmental entropy due to heat dissipation. The relationship between temperature and entropy is direct; as temperature rises, so does the entropy due to increased particle movement and disorder.

Step-by-Step Solution

Step 1: Understanding Condensation

Condensation is a process that transforms a gas into a liquid state. This occurs when the temperature of the gas drops, allowing particles to lose kinetic energy and come together to form a liquid. During this change, the system releases heat into the surrounding environment, leading to a decrease in the system’s entropy, which is a measure of disorder.

Step 2: Impact on Environmental Entropy

As heat is dissipated from the condensation process into the environment, the overall entropy of the environment increases. This occurs because the released heat adds energy to the surrounding air or medium, making it more chaotic. Key factors contributing to this rise in entropy include:

  • Release of heat energy into the surroundings
  • Higher particle movement in the environment
  • Increased disorder as energy spreads out

Step 3: Relationship Between Temperature and Entropy

The relationship between temperature and entropy is direct; as temperature increases, the entropy of a system also increases. This happens because the kinetic energy of the particles in the substance rises, promoting more vigorous motion and increased disorder. Important points to consider are:

  • Higher temperatures facilitate greater particle movement.
  • More kinetic energy leads to increased randomness.
  • Entropy continues to rise with sustained temperature increases.

Related Concepts

Condensation

The process of transforming a gas into a liquid state as temperature drops and particles lose kinetic energy, releasing heat into the environment

Entropy

A measure of disorder within a system, which decreases during condensation but increases in the surrounding environment due to heat release

Kinetic energy

The energy possessed by particles due to their motion, which is influenced by temperature and affects the randomness and disorder of a system.

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