Practice question

MCQ

Question

A zero-order reaction has a rate constant of 3.0 × 10⁻³ mol L⁻¹ s⁻¹. If the initial concentration is 0.18 mol L⁻¹, how long will it take for 50% decomposition?

Choose one · Correct answer highlighted

30 s Correct 60 s 45 s 90 s

t½ = 0.18/(2×3.0×10⁻³) = 30 s.

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