Gce Model Questions Vol1 2020 Chemistry Question 15
Practice objective / multiple choice question 15 from the 2020 Gce Model Questions Vol1 Chemistry examination.
A river with a flow rate of 2000 L s\(^{-1}\) receives a continuous discharge of wastewater that contains 0.050 mg L\(^{-1}\) of a pesticide. The pesticide undergoes first‑order degradation with a half‑life of 12 days. Assuming complete mixing at the point of discharge and that water travels 5 km downstream in 2 h, calculate the concentration of the pesticide 5 km downstream. Express your answer in µg L\(^{-1}\).
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About This Question
This is Gce Model Questions Vol1 2020 Chemistry Question 15. It is one of the objective questions from the 2020 Gce Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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