Where possible, classify these systems as reactant-favored or product-favored at 298 k. if the direction cannot be determined from the information given, classify the reaction as "insufficient information."

1. a(s) + b(g) ⇆ 2c(g) δh degree=-109 kj
2. a(s) + 2b(g) ⇆ c(g) δh degree=+271 kj
3. a(g) + b(g) ⇆ 4c(g) δh degree=+322 kj
4. a(g) + 2b(g) ⇆ 2c(g) δh degree=-89 kj