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AP Chemistry
Unit 5 – Kinetics
Topic 5.7
A mechanism is as showed: [Step 1: H2 + IBr → HI + HBr (slow)] [Step 2: HI + IBr → I2 + HBr (fast)]. Two experiments are performed within the same temperature of different concentrations. Which statement below is correct?
The reaction rate undergoes a 4-fold increase where the initial concentrations of both HI and IBr were doubled.
The reaction rate undergoes a 2-fold increase where the initial concentrations of both HI and IBr were doubled.
The reaction rate undergoes a 8-fold increase where the initial concentrations of both H2 and IBr were doubled.
The reaction rate undergoes a 4-fold increase where the initial concentrations of both H2 and IBr were doubled.
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AP Chemistry - 5.7 Introduction to Reaction Mechanisms
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H2
HBr
HI
I2
IBr
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AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.
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