Igcse Model Questions Vol1 2019 Chemistry Question 36
Practice objective / multiple choice question 36 from the 2019 Igcse Model Questions Vol1 Chemistry examination.
An industrial plant discharges 200 L h⁻¹ of waste water containing 0.05 mol of NH₃. The river into which it is released has a flow of 5000 L h⁻¹ and a dissolved‑oxygen concentration of 0.8 mol L⁻¹. Ammonia reacts with oxygen according to \( \mathrm{NH_3 + 2 O_2 \rightarrow NO_3^- + H^+ + H_2O} \). A downstream wetland removes 60 % of the nitrate formed. Assuming oxygen is not limiting, calculate the concentration of nitrate (in mol L⁻¹) remaining in the river after the wetland.
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About This Question
This is Igcse Model Questions Vol1 2019 Chemistry Question 36. It is one of the objective questions from the 2019 Igcse Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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