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A vessel at 1000 K contains CO(2) with a...

A vessel at 1000 K contains `CO_(2)` with a pressure of 0.5 atm. Some of the `CO_(2)` is converted into CO on the addition of graphite. If the total pressure at equilibrium is 0.8 atm, the value of K is :

A

0.3 atm

B

0.18 atm

C

1.8 atm

D

3 atm

Text Solution

Verified by Experts

The correct Answer is:
C
`{:(CO_(2)(g)+C(s),hArr,2CO(g)),(0.5,,0),(0.5-x,,2x):}`
Now, `0.5-x+2x=0.8` atm
x = 0.3 atm
`P_(CO)=2xx0.3=0.6` atm
`P_(CO_(2))=0.5-0.3=0.2` atm
`K=((p_(CO))^(2))/(p_(CO_(2)))=(0.6xx0.6)/(0.2)=1.8` atm
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