Verified Solution • 2025–26 Session
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QNEET-2017-Ch-932: NEET 2017 Chemistry - Class 11 NEET-2017-Ch-932 Solution: A 20 litre container at 400 K contains \(CO_2(g)\) at pressure…
A 20 litre container at 400 K contains at pressure 0.4 atm and an excess of SrO (neglect the volume of solid SrO). The volume of the container is now decreased by moving the movable piston fitted in the container. The maximum volume of the container when pressure of attains its maximum value will be (Given that: ) 2 litre 10 litre 4 litre 5 litre
Multiple Choice Options
- A 2 litre
- B 10 litre
- C 4 litre
- D 5 litre
Step-by-Step Verified Solution
Initially, P 1 = 0.4 atm
V 1 = 20 L
T 1 = 400 K
Max. pressure of CO 2 = Pressure of CO 2 at
equilibrium
For reaction,
SrCO 3 (s) _ SrO(s) + CO 2
K p = P CO 2 = 1.6 atm = maximum pressure of CO 2
volume of container at this stage.
V 2 = n R T P 2 ......(i)
Since, reaction was not at equilibrium earlier and
also container is sealed.
_ n = constant
n = P 1 V 1 R T .....(ii)
From (i) and (ii)
V 2 = P 1 V 1 R T _ R T P 2 = 0.4 _ 20 1.6 = 5 L