AP Chemistrymediummcq1 pt
A second-order reaction starts with [A]₀ = 1.0 M and k = 0.50 M⁻¹s⁻¹. What is its half-life?
A.2.0 s
B.1.4 s
C.0.50 s
D.4.0 s
Explanation
Core Concept
Second-order half-life: t½ = 1/(k[A]₀) = 1 ÷ (0.50 × 1.0) = 2.0 s.
Correct Answer
A2.0 s
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