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MCQ

Question

A first-order gaseous reaction has an initial pressure of 1.5 atm. After 25 s, the total pressure is 2.0 atm. What is the rate constant?

Choose one · Correct answer highlighted

0.0115 s⁻¹ 0.0203 s⁻¹ 0.0162 s⁻¹ Correct 0.0092 s⁻¹

x = 0.5, pA = 1.0. k ≈ 0.0162 s⁻¹.

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