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Rank each of the following groups of molecules from least entropy to most entropy. a. Fe2O3...

Rank each of the following groups of molecules from least entropy to most entropy.

a. Fe2O3 (s) ; Al2O3 (s); Fe3O4 (s)

b. ClO4- (aq) ; ClO2- (aq); ClO3-

c. SF6 (g) ; SF4 (g) ; S2F10 (g)

d. Mg (s) ; Ba (s) ; Ca (s)

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Answer #1

a)

least to most entropy : Al2O3 (s) < Fe2O3 (s) < Fe3O4 (s)

b)

least to most entropy   : ClO2- (aq) < ClO3- < ClO4- (aq)

C)

least to most entropy : SF4 (g) < SF6 (g) < S2F10 (g)

d)

least to most entropy : Mg(s) < Ca(s) < Ba(s)

explanation : the reasons for all parts is only one thing . molar mass increases entropy increases.

more molar mass compound will have more entropy . less molar mass has lesser entropy

so more molar mass compound will have greater disorder .

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