January 2019 NY Regents Chemistry Exam
42 During which phase change does the entropy of a sample of H2O increase? (1) H2O(g) → H2O(l)
(2) H2O(g) → H2O(s)
(3) H2O(l) → H2O(g)
(4) H2O(l) → H2O(s)
Solution: Entropy is a measure of the disorder. Gas (g) has the higher entropy followed by liquid(l) and finally solid (s).
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