Which of the following changes has a decrease in entropy? (3 points)

1.) 2LiClO3 (s) —> 3O2 (g) + 2LiCl (s)

2.) N2O4 (g) —> 2NO2 (g)

3.) C6H6 (l) —> C6H6 (s)

4.) C2H5OH (l) + 3O2 (g) —> 2CO2 (g) + 3 H2O (g)