A vessel at `1000 K` contains carbon dioxide with a pressure of `0.5 atm`. Some of the carbon dioxide is converted to carbon monoxide on addition of graphite. Calculate the value of `K_(p)` if total pressure at equilibrium is `0.8 atm`.

Answer

A

Explanation

`{:(,CO_(2)(g),+,C(g),rarr,2CO(g)),("Initial",0.5,,x,,),("Final",0.5-p,,x,,2p):}`
Total `(0.5-p) +2p=0.8 "atm" :' p=0.3 "atm"`
`:. p_(CO_(2))=0.5-0.3=0.2`
`p_(CO)=2xx0.3=0.6`
`K_(p)=((P_(CO)))/(P_(CO_(2)))=(0.6)^(2)/(0.2)=1.8`