Practice question

MCQ

Question

A first-order gaseous reaction has an initial pressure of 1.0 atm. After 50 s, the total pressure is 1.5 atm. What is the rate constant?

Choose one · Correct answer highlighted

0.0092 s⁻¹ 0.0115 s⁻¹ 0.0162 s⁻¹ 0.0139 s⁻¹ Correct

For A → 2B, x = 0.5, pA = 0.5. k ≈ 0.0139 s⁻¹.

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