Question

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)

Answer 1

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

Step-by-step 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.