Q.

A 600 ml vessel containing oxygen at 800 mm and a 400 ml vessel containing Nitrogen at 600 mm at the same temperature are kept in communication with each other through a stop-cock. Neglecting the volume of the stop-clock, the final pressure of the mixture is

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a

1400 mm

b

1000 mm

c

720 mm

d

700 mm

answer is C.

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Detailed Solution

Pmax=P1V1+P2V2V1+V2           =600×800+400×6001000           =480+240           =720 mm of Hg
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