A vessel of volume 3.0 l contains ideal gas at the temperature 0°C. After a portion of the gas has been let out, the pressure in the vessel decreases by 0.8 atm (the temperature remaining constant). T

Question

A vessel of volume 3.0 l contains ideal gas at the temperature 0°C. After a portion of the gas has been let out, the pressure in the vessel decreases by 0.8 atm (the temperature remaining constant). The gas density under the normal condition (0°C and 1 atm) is 1.25 g/l. The mass of released gas in (g) is

TestHub · Accepted Answer

Moles released: Delta n = Delta P x V/(RT) = 0.8 × 3.0/(0.0821 × 273) = 0.107 mol. Molar mass from normal density: M = 1.25 g/l × 22.4 l/mol = 28 g/mol. Mass released = 0.107 × 28 = 3 g.

Chemistry - Ideal Gas Question with Solution | TestHub

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