Gce Model Questions Vol1 2024 Chemistry Question 28
Practice objective / multiple choice question 28 from the 2024 Gce Model Questions Vol1 Chemistry examination.
A factory releases \(5.0 \times 10^{5}\ \text{kg}\) of \(\text{SO}_2\) each year. The emissions are assumed to mix uniformly in a rectangular atmospheric box covering the city, with dimensions \(20\ \text{km} \times 20\ \text{km} \times 1\ \text{km}\). \(\text{SO}_2\) is removed from the box by a first‑order reaction with rate constant \(k = 0.15\ \text{day}^{-1}\). (a) Assuming steady state, calculate the average concentration of \(\text{SO}_2\) in the box in \(\mu\text{g m}^{-3}\). (b) How long will it take for the concentration to reach 90 % of the steady‑state value after emissions begin?
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About This Question
This is Gce Model Questions Vol1 2024 Chemistry Question 28. It is one of the objective questions from the 2024 Gce Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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