Free-Response Questions
- Time yourself: 20 minutes
- Do NOT check answers until finished
- Then review explanations carefully
SECTION 2: FRQ
FRQ 1
Explain how increasing pressure affects equilibrium when gases are involved.
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Key points
- system shifts to fewer gas moles
- reduces pressure
- Le Châtelier principle
Sample answer: Increasing pressure causes the equilibrium to shift toward the side with fewer gas molecules to reduce pressure.
FRQ 2
Explain why increasing temperature increases reaction rate.
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Key points
- particles move faster
- more collisions
- more effective collisions
Sample answer: Increasing temperature increases kinetic energy, leading to more frequent and effective collisions, which increases reaction rate.