First-Order Integrated Rate Law (ln[A] = ln[A]₀ − kt)

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ln[A] = ln[A]₀ − kt

What each symbol means

SymbolWhat it stands for
kRate constant (s⁻¹)
tTime
[A]Concentration at t
[A]₀Initial

When to use this

First-order in A: v ∝ [A]. Half-life independent of [A]₀.