At a High Temperature, Carbon Dioxide Decomposes to Produce Carbon $\leftrightarrows$

question 8

Multiple Choice

At a high temperature, carbon dioxide decomposes to produce carbon monoxide and oxygen. Which expression corresponds to the equilibrium constant for the reaction written as
CO₂(g) $\leftrightarrows$ CO(g) +1/2 O₂(g) ?

• A) \(\frac { \left[ \mathrm { CO } _ { 2 } \right] } { [ \mathrm { CO } ] \left[ \mathrm { O } _ { 2 } \right] }\)
• B) \(\frac { \left[ \mathrm { CO } _ { 3 } \right] \left[ \mathrm { O } _ { 2 } \right] } { \left[ \mathrm { CO } _ { 2 } \right] }\)
• C) \(\frac { [ \mathrm { CO } ] \left[ \frac { 1 } { 2 } \mathrm { O } _ { 2 } \right] } { \left[ \mathrm { CO } _ { 2 } \right] }\)
• D) \(\frac { [ \mathrm { CO } ] \left[ \mathrm { O } _ { 2 } \right] ^ { 1 / 2 } } { \left[ \mathrm { CO } _ { 2 } \right] }\)
• E) \(\frac { \frac { 1 } { 2 } [ \mathrm { CO } ] \left[ \mathrm { O } _ { 2 } \right] } { \left[ \mathrm { CO } _ { 2 } \right] }\)

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