Effect of Temperature on Reaction Rate (AQA A-Level Chemistry): Flashcards

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Effect of Temperature on Reaction Rate
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Effect of increasing temp on reaction rate

Increases the rate of reaction

Effect of higher temp on particle kinetic energy

Kinetic energy increases

Maxwell-Boltzmann curve shift at higher temp

Shifts to the right

Peak height of Maxwell-Boltzmann curve at higher temp

Peak becomes lower

Maxwell-Boltzmann curve shift at lower temp

Shifts to the left

Distribution shape at higher temperatures

Broader and flatter

Effect of higher temp on particles with E≥EaE \geq E_a

Greater proportion have energy ≥Ea\geq E_a

What area under curve beyond EaE_a represents

Number of molecules that can successfully react

Why small temp increase causes large rate increase

Exponential increase in molecules with energy above EaE_a

Effect of higher temp on collision frequency

Collisions become more frequent

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