Delta S will be positive for the reaction . a. 2Hg (l) + O2(g) > 2HgO (s) b. 2NO2 (g) > N2O4(g) c. CO2(g) > CO2(s) d. 2H2 (g) + O2(g) > 2H2O(g) e. BaF2(s) > Ba2 (aq) + 2F- (aq)

BaF2(s) > Ba2 (aq) + 2F- (aq)

Explanation:

Entropy refers to the degree of disorderliness in a system. Processes that lead to greater disorderliness in a system are said to increase the entropy of the system or lead to a positive value of ΔS.

If we consider the process, BaF2(s) > Ba2 (aq) + 2F- (aq), we will notice that ions were produced in solution thereby increasing the disorderliness of the system.

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