Question

which of the following phase changes is the largest decrease in entropy?○ freezing○ melting○ evaporation○ sublimation○ deposition○ condensationquestion 83 ptswhich of the following phase changes is equilibrium with freezing at a specific pressure and temperature?○ deposition○ evaporation○ melting○ freezing○ sublimation○ condensation

Explanation:

For the first question: Entropy measures molecular disorder. Gases have highest entropy, liquids intermediate, solids lowest. Deposition is the phase change from gas directly to solid, which causes the largest drop in molecular disorder (entropy) compared to other options that either increase entropy or have smaller decreases.
For the second question: Freezing is liquid to solid; melting is solid to liquid. At a specific pressure and temperature, these two opposite phase changes occur at equilibrium, with equal rates of forward and reverse change.

Answer:

1. deposition
2. melting