Question

It is known fact that gases expand to fill all available volume and their final pressure becomes equal at every point in connected systeam.

If the gas in the above part weigh `15.36 g`, then select the correct statement(s) :
`(R = (1)/(12) l. atm//mol.K)`
A. The gas may be `SO_(2)`
B. The gas may be `CH_(4)`
C. Moles of gas is `(6)/(25)`
D. Moles of gas is `0.96`

Answer 1

Correct Answer - A::C
`Pi = 6 cm , P_(f) = ?`
`Vi = 1 L , V_(f) = 3L`
`T = 300 , T = 300 K`
`n_(i) = (6 xx 1)/(R xx 100) , n_(f) = n_(i)`
`rArr P_(f) = (6 xx 1)/(R xx 300) xx (R xx 300)/(3) = 2 "atm"`
`n_(i) = (6)/(1/12xx300) = 6/25`
`rArr MM = ((15.36)/(6))/(25) = 2.56 xx 25`
`= 64 g//mol`
So the gas can be `SO_(2)`