A zero-order reaction takes 90 s to reduce the concentration from 0.15 mol L⁻¹ to 0.06 mol L⁻¹. What is the rate constan

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A zero-order reaction takes 90 s to reduce the concentration from 0.15 mol L⁻¹ to 0.06 mol L⁻¹. What is the rate constant?

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5.0 × 10⁻⁴ mol L⁻¹ s⁻¹ 1.0 × 10⁻³ mol L⁻¹ s⁻¹ Correct 1.5 × 10⁻³ mol L⁻¹ s⁻¹ 2.0 × 10⁻³ mol L⁻¹ s⁻¹

k = (0.15 − 0.06)/90 = 1.0 × 10⁻³ mol L⁻¹ s⁻¹.

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