Which of the following processes will result in the greatest decrease in entropy in a sample of a chemical substance?A.DepositionB.MeltingC.CondensationD.Sublimation
Question
Which of the following processes will result in the greatest decrease in entropy in a sample of a chemical substance?A.DepositionB.MeltingC.CondensationD.Sublimation
Solution
The process that will result in the greatest decrease in entropy in a sample of a chemical substance is A. Deposition.
Here's why:
Entropy is a measure of disorder or randomness in a system. The four processes mentioned - deposition, melting, condensation, and sublimation - all involve changes in the state of matter.
A. Deposition is the process where a gas changes directly into a solid without going through the liquid state. This process decreases entropy because solids have the least amount of disorder among the three states of matter.
B. Melting is the process where a solid turns into a liquid. This process increases entropy because liquids have more disorder than solids.
C. Condensation is the process where a gas turns into a liquid. This process decreases entropy, but not as much as deposition because liquids have more disorder than solids.
D. Sublimation is the process where a solid changes directly into a gas without going through the liquid state. This process increases entropy because gases have the most disorder among the three states of matter.
So, among the four options, deposition results in the greatest decrease in entropy.
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