11. Which factor does NOT affect equilibrium position?
A) Concentration
B) Temperature
C) Catalyst
D) Pressure
Answer: C
12. A catalyst:
A) Changes equilibrium
B) Speeds up equilibrium attainment
C) Stops reaction
D) Changes Kc
Answer: B
13. Equilibrium constant expression excludes:
A) Solids
B) Gases
C) Aqueous solutions
D) Liquids
Answer: A
14. For exothermic reaction, increasing temperature shifts equilibrium:
A) Right
B) Left
C) No change
D) Both sides
Answer: B
15. If Kc > 1, reaction favors:
A) Reactants
B) Products
C) Neither
D) Both equally
Answer: B
16. If Kc < 1, reaction favors: A) Products B) Reactants C) Neither D) Both Answer: B
17. Equilibrium constant for reverse reaction is:
A) Same
B) Inverse
C) Double
D) Zero
Answer: B
18. When pressure increases, equilibrium shifts to side with:
A) More moles
B) Fewer moles
C) Equal moles
D) No effect
Answer: B
19. Homogeneous equilibrium involves:
A) Same phase
B) Different phases
C) Solid only
D) Liquid only
Answer: A
20. Heterogeneous equilibrium involves:
A) Same phase
B) Different phases
C) Gas only
D) Liquid only
Answer: B