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MCQ

Question

The decomposition of a gas follows first-order kinetics with an initial pressure of 2.0 atm. After 60 s, the total pressure is 2.8 atm. What is the rate constant?

Choose one · Correct answer highlighted

0.00462 s⁻¹ 0.00675 s⁻¹ Correct 0.00892 s⁻¹ 0.0115 s⁻¹

x = 0.8, pA = 1.2. k ≈ 0.00675 s⁻¹.

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