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  • To an evacuated vessel with Movable Pistons under external pressure of 0.5 atm., 1 Mole of He and 2 Mole of unknown compound [ vapour Pressure of 0.08 Mattram atm at <img a

To an evacuated vessel with Movable Pistons under external pressure of 0.5 atm., 1 Mole of He and 2 Mole of unknown compound [ vapour Pressure of 0.08 Mattram atm at 0^{\circ} \mathrm{C} ] are introduced. Considering the ideal Gas behaviour the total volume of gases at 0^{\circ} \mathrm{C} is close to?

Option: 1

53.3 L


Option: 2

7 L


Option: 3

64 L


Option: 4

58 L


Answers (1)

best_answer

Since, the external pressure is .5 atm the gas Pressure is abs .5 atm as Piston is Movable. out of this. 08 atm is the partial Pressure of unknown compound

 Partial Pressure He =.5-.08=0.42 atm

\mathrm{\text { volume }=\frac{n(\text { He }) \text {R T }}{r(\text { He })}=\frac{1 \times .082 \times 273}{.42}}

\mathrm{=53.3 \mathrm{~L}}

volume of container = volume of He

Posted by

Divya Prakash Singh

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