Question

If a 2 litre flask of N2 at 0 c and 70cm P is connected with a 3 litre flask of O2 at the same temperature and 100cm P. What will be the final pressure after the gases have thoroughly mixed at the same temperature as before? also calculate the mole percent of each gas in the resulting mixture .The volume of stopcock may be neglected.
Answer is 88..

Answer 1

Answer:

Let final pressure be p cm

number of mole of N

2

=

RT

PV

n

1

=

R×20

o

C

70cm×2litre

number of mole of O

2

=

RT

PV

n

2

=

R×20

∘

C

100 cm×3litre

final pressure =

v

(n

1

+n

2

)RT

=

3+2

(

R×20

∘

C

70cm×2

+

R×20

∘

C

100cm×3

)×R×20

∘

C

=170 cm

Mole %

n

1

=

20R

140

+

20R

300

20R

140

=35%

n

2

=65%

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Answer 2

Answer:

answer is 65%

Explanation:

hope this helps