Chapter 18, Problem 1SAQ

Which reaction Is most likely to have a positive $\Delta S_{sys}$ ?

• $3{\text{ NO}}_2(g)+{\text{H}}_2\text{O(}l)\to 2{\text{HNO}}_3(l)+\text{NO(}g)$
• ${\text{SiO}}_2(s)+3\text{C(}s)\to \text{SiC}(s)+2\text{ CO(}g)$
• $\text{CO}(g)+{\text{Cl}}_2\text{(}g)\to {\text{COCl}}_2\text{(}g)$
• ${\text{6CO}}_2(g)+6{\text{H}}_2\text{O(}g)\to {\text{C}}_6{\text{H}}_{12}{\text{O}}_6(s)+6{\text{ O}}_2\text{(}g)$