A vessel at 1000 K contains CO2 with a pressure of 0.5 atm. Some of CO2 is converted into CO on addition of graphite. If total pressure at equilibrium is 0.8 atm, then Kp is : (A) 3 atm (B) 1.8 atm (C

Question

A vessel at 1000 K contains CO2 with a pressure of 0.5 atm. Some of CO2 is converted into CO on addition of graphite. If total pressure at equilibrium is 0.8 atm, then Kp is :

(A) 3 atm
(B) 1.8 atm
(C) 0.3 atm
(D) 0.18 atm

Prashant Kotian · Accepted Answer

Correct answer: B. CO2(g) + C(s) 2CO(g) 0.5 atm – 0.5 – x – 2x PT = 0.5 + x = 0.8 or x = 0.3 Kp = CO CO P P = . ) . ( = 1.8 atm

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