Igcse Model Questions Vol1 2024 Chemistry Question 30
Practice objective / multiple choice question 30 from the 2024 Igcse Model Questions Vol1 Chemistry examination.
At 25 °C the Henry's law constant for carbon dioxide is \(k_H = 3.3 \times 10^{-2}\ \text{mol·L}^{-1}\text{atm}^{-1}\). The atmospheric concentration of \(\mathrm{CO_2}\) is 400 ppm (by volume). (a) Calculate the concentration of dissolved \(\mathrm{CO_2}\) in the lake water in mg L\(^{-1}\). (b) A water‑treatment process removes 85 % of the dissolved \(\mathrm{CO_2}\). Determine the concentration remaining in the water (mg L\(^{-1}\)). (c) If the lake volume is \(2.0 \times 10^{9}\) L, calculate the total mass of \(\mathrm{CO_2}\) removed by the treatment in kilograms.
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This is Igcse Model Questions Vol1 2024 Chemistry Question 30. It is one of the objective questions from the 2024 Igcse Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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