A reaction follows zero-order kinetics with a rate constant of 4.0 × 10⁻⁴ mol L⁻¹ s⁻¹. If the initial concentration is 0
t = [R]₀/k = 0.08/(4.0×10⁻⁴) = 200 s.
Ref: NCERT Class 12 Chemistry > Chapter 3: Chemical Kinetics > Topic: Integrated Rate Equations - Zero Order Reactions