For first-order reactions, rate = k[A]. So k = rate/[A] = (mol L⁻¹ s⁻¹)/(mol L⁻¹) = s⁻¹
NEET UG 2026 — Chemistry Physical Chemistry
The unit of rate constant for a first-order reaction is:
Verified 30 May 2026.
mol L⁻¹ s⁻¹
s⁻¹
L mol⁻¹ s⁻¹
L² mol⁻² s⁻¹
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