Regents Chemistry Exam June 2024 Question 25
25 Which process results in an increase in disorder?
(1) the condensation of water vapor
(2) the freezing of liquid ethanol
(3) the sublimation of solid iodine
(4) the solidification of melted sodium chloride
Solution:
Increased disorder (entropy) results from an increase in the number of particles or a changes in phase (solid to liquid, liquid to gas or solid to gas). Condensation is a change from gas to liquid phase and results in a decreased disorder. Freezing is a change from liquid to solid and results in a decreased disorder. Sublimation is a change from solid to gas and should result in an increased disorder. Choice 3 is the correct answer choice.
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