. To an evacuated vessel with movable piston under

external pressure of 1 atm., 0.1 mol of He

and 1.0 mol of an unknown compound (vapour pressure 0.68 atm. at 0ºC ) are introduced.

Considering the ideal gas behaviour determine the total volume (in litre) of the gases at 0ºC

A: 7 L

B: 9 L

C: 4 L

D: 2.3L

Best Answer

Explanation :

Vapoure pressure due to the compound = 0.68 atm

Final Answer :

Hence the final answer is option A.i.e. 7L.

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