A vessel of '1000 K' contains 'CO2', wit...

A vessel of '1000 K' contains 'CO_2', with a pressure of '0.5 atm .' Some of the 'CO_2' converted into 'CO' on the addition of graphite. The value of 'K' if the total pressure at equilibrium is '0.8 atm'. is:

0.18atm

1.8atm

0.3atm

3atm

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