Chemistry - Ideal Gas Question with Solution | TestHub

ChemistryIdeal GasVapour PressureMedium2 minQB

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0.075 moles of an ideal gas is collected over water at 47° $C$ and it occupied 1.6 L. The total pressure exerted on the walls of the vessel is -

(Vapour pressure of water at 47° $C$ = 0.10 atm, $R$ = 0.08 L-atm/K-mol)

Answer:

Solution:

Pressure of the dry gas = $n RT$ / $V$ = 0.075 x 0.08 x 320/1.6 = 1.2 atm.

The gas collected over water is saturated with water vapour, so the total pressure = 1.2 + 0.10 = 1.3 atm.

1.2 atm is only the dry gas pressure.

Answer: ( $C$ ).

Stream:JEESubject:ChemistryTopic:Ideal GasSubtopic:Vapour Pressure

⏱ 2mℹ️ Source: QB

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