NEET-XII-Chemistry
Previous Year Paper year:2017
- #20A 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 is now
decreased by moving the movable piston fitted in the
container. The maximum volume of the container, when
pressure of ``CO_2`` attains its maximum value, will be :
(Given that : ``SrCO_3``(s) ``\xrightleftharpoons{K}`` SrO (s) + ``CO_2`` ( g),
``K_p`` = 1.6 atm)
(1) 2 litre
(2) 5 litre
(3) 10 litre
(4) 4 litredigAnsr: 2Ans : (2)
Sol.
)s(
3SrCO )s(
SrO +
)g(
2CO
At maximum pressure of CO2
Kp = 2COP = 1.6 atm
Temperature is constant
∴ P1V1 = P2V2
0.4 × 20 = 1.6 × V2
V2 = 5 lit