A 10.0 L flask contains 64 g of oxygen at 27^ . (Assume O_2 gas is behaving ideally). The pressure inside the flask in bar is [Given R = 0.0831 L bar - Chemistry MCQ NEET 2022 2026 | ExamTest.live

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A 10.0 L flask contains 64 g of oxygen at 2 7^{\circ} C . (Assume O_{2} gas is behaving ideally). The pressure inside the flask in bar is [Given R = 0.0831 L bar K^{- 1} mol^{- 1}]:

Solution & Step-by-step Explanation

Use P V = n RT ⟹ P = \frac{n RT}{V} .Moles of O_{2} (n) = \frac{Mass}{Molar mass} = \frac{64}{32} = 2 mol . T = 27 + 273 = 300 K . V = 10.0 L . P = \frac{2 \times 0.0831 \times 300}{10} = 2 \times 0.0831 \times 30 = 60 \times 0.0831 P = 4.986 bar \approx 4.9 bar

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A 10.0 L flask contains 64 g of oxygen at 2 7^{\circ} C . (Assume O_{2} gas is behaving ideally). The pressure inside the flask in bar is [Given R = 0.0831 L bar K^{- 1} mol^{- 1}]:

2.5

498.6

49.8

4.9

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