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. The value of K if the total pressure at equilibrium is 0.8 atm , is

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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. The value of K if the total pressure at equilibrium is 0.8 atm , is

TestHub · Accepted Answer

CO 2 ​ ( g ) + C ( s ) ⇌ 2 CO ( g ) Initial 0.5 atm pressure At equi ( 0.5 − x ) ∴ Total no. of moles at equilibrium ∴ ∴ ​ x = 0.3 atm p CO 2 ​ ​ = 0.5 − 0.3 = 0.2 P CO ​ = 2 x = 2 × 0.3 = 0.6 atm K = p CO 2 ​ ​ p CO 2 ​ ​ = 0.2 ( 0.6 ) 2 ​ = 1.8 atm ​

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