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AP Chemistry – FRQ
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Time yourself: 20 minutes
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Do NOT check answers until finished
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Then review explanations carefully
SECTION 2: FRQ
FRQ 1
Explain how increasing pressure affects equilibrium when gases are involved.
... 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.
... 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.
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