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A 20 litre container at 400 K contains C...

A `20` litre container at `400 K` contains `CO_(2) (g)` at pressure `0.4 atm` and an excess of `SrO` (neglect the volume of solid `SrO`). The volume of the container, when pressure of `CO_(2)` attains its maximum value, will be:
(Given that: `SrCO_(3)(s) hArr SrO(s) +CO_(2)(g)K_(p) =1.6 atm`)

A

2 litre

B

5 litre

C

10 litre

D

4 litre

Text Solution

Verified by Experts

The correct Answer is:
B
Max. pressure of `CO_2` = Pressure of `CO_2` at equillibrium
For reaction
`SrCO_2(s) 1.6 atm = maximum pressure of `CO_2`
Volume of container at this stage.
`V = (nRT)/(P) " " .....(i)`
Since container is scaled and reaction was not earlier at equilibrium
`therefore n =` constant
`n = (PV)/(RT) = (0.4 xx 20)/(RT) " ".....(ii)`
Put equation (ii) in equation (i)
`V = [(0.4 xx 20)/(RT)](RT)/(1.6) = 5L`
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