Chemical EquilibriumMedium

Question

At a certain temperature, the value of KP for the reaction: 2CO(g) $\rightleftharpoons$CO2(g) + C(graphite) is 0.1 atm−1. What is the ratio of partial pressures of CO and CO2 at equilibrium, taking the total pressure to be 1.1 atm?

Options

A.9:1
B.10:1
C.1:10
D.1:9

Solution

2CO $\rightleftharpoons$ CO2 + C(s)

Equilibrium x atm y atm

From question, x + y = 1.1 and $\frac{y}{x^{2}} = 0.1$

$\therefore\frac{x}{y} = \frac{10}{1}$

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