13 5.5 points
Calculate the standard entropy change for the following reaction and account for the sign of the entropy change.
S° H2O (I) = 69.9 J/K. mol,
2H2O2(1) 2H2O (l) + 02 (8)
S° H2O2 (1) = 109.6 J/K mol,
O2 (g)-205.0 J/K mal
+126 J/k, positive because moles of gas increase
-136 J/k, negative because moles of gas decrease
321 J/k, positive because moles of gas dearease
-321 J/k, negative because moles of gas increase