alleryThe time for a reactant to fall to half its concentration is the:
AHalf-life
BFull life
CRate life
DMean life
Answer & Solution
Correct answer: A. Half-life
1. The concentration is watched as the reaction runs.
2. The moment of interest is when half remains.
3. That time is the half-life.
_Source: syllabus Chemistry Part I, Chapter 4, Chemical Kinetics._
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