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`.

Options

A. `1.8` atm
B. `3` atm
C. `0.3` atm
D. `0.18`

Answer

A

Explanation

`CO_(2)(g)+C(s)hArr2CO(g)`
`0.5atm`
`0.5-p 2p`
total pressure`=0.5-p+2p=0.8`
`p=0.3`
`K_(p)=(P_(CO)^(2))/(P_(CO_(2)))=(2P)^(2)/((0.5-0.3))=(0.6)^(2)/((0.50.3))rArr K_(p)=1.8`