Apentix/AP Chemistry/Unit 5: Kinetics/Question

AP Chemistrymediummcq1 pt

Raising the temperature from 300 K to 600 K increases the fraction of molecules above a given Ea. Which best describes why?

A.The energy distribution shifts to higher energies

B.Molecules double their speed exactly

C.The activation energy doubles

D.The number of molecules doubles

Explanation

Core Concept

The Maxwell–Boltzmann distribution broadens and shifts with temperature, so far more molecules land above the Ea threshold. The effect is exponential, not linear.

Correct Answer

AThe energy distribution shifts to higher energies

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