AP Chemistryhardmcq1 pt

An experiment tracks [A] over time and finds the half-life doubles as [A]₀ halves. What is the reaction order?

A.Second order
B.First order
C.Zero order
D.Order cannot be determined

Explanation

Core Concept

For second order, t½ = 1/(k[A]₀) — halving [A]₀ doubles the half-life. That inverse dependence is the diagnostic.

Correct Answer

ASecond order

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