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青州's Question
Chemistry
Posted about 2 years ago

Which of the following sets of systems are in order of increasing entropy?
(A) H2O(l),H2O(g),H2O(s)\mathrm{H}_{2} \mathrm{O}(l), \mathrm{H}_{2} \mathrm{O}(g), \mathrm{H}_{2} \mathrm{O}(\mathrm{s})
(B) H2(g),HBrO4(g),HBr(g)\mathrm{H}_{2}(g), \mathrm{HBrO}_{4}(g), \mathrm{HBr}(g)
(C) He(g),Ar(g),Ne(g)\mathrm{He}(g), \operatorname{Ar}(g), \mathrm{Ne}(g)
(D) He(g),Cl2(g),P4(g)\mathrm{He}(g), \mathrm{Cl}_{2}(g), \mathrm{P}_{4}(g)
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Answer from Sia
Posted about 2 years ago
D
Key Concept
Entropy
Explanation
Entropy is a measure of disorder or randomness in a system. In gases, entropy is higher due to the greater freedom of movement of the particles. Among the given options, mathrmHe(g)\\mathrm{He}(g), mathrmCl2(g)\\mathrm{Cl}_{2}(g), and mathrmP4(g)\\mathrm{P}_{4}(g) are in order of increasing molecular complexity and thus increasing entropy.

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