Neco Model Questions Vol1 2020 Chemistry Question 2
Practice objective / multiple choice question 2 from the 2020 Neco Model Questions Vol1 Chemistry examination.
A drinking‑water source contains pollutant A that decays during storage with a first‑order rate constant \(k = 0.02\ \text{day}^{-1}\). The water is stored for 3 days before consumption. After storage the water also contains a second pollutant B at a constant concentration of \(0.01\ \text{mg\,L}^{-1}\). An adult drinks 2 L of the water each day. The combined daily intake of A and B must not exceed the tolerable daily intake (TDI) of \(0.04\ \text{mg\,day}^{-1}\). Determine the maximum initial concentration \(C_0\) of pollutant A (in mg L\(^{-1}\)) that can be present in the source water so that the TDI is not exceeded.
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About This Question
This is Neco Model Questions Vol1 2020 Chemistry Question 2. It is one of the objective questions from the 2020 Neco Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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