Chapter 15, Problem 51E

The following reaction is used self-contained breathing devices as a source of ${\text{O}}_{\text{2}}\left(\text{g}\right)$ .

${\text{4KO}}_{\text{2}}\left(\text{s}\right){\text{+2CO}}_{\text{2}}\left(\text{g}\right)\rightleftharpoons {\text{2K}}_{\text{2}}{\text{CO}}_{\text{3}}\left(\text{s}\right){\text{+3O}}_{\text{2}}\left(\text{g}\right)$

$K_p=25.5\text{at}\text{25}°\text{C}\text{(for pressures in atmospheres) }$

Suppose that a sample of ${\text{CO}}_{\text{2}}\left(g\right)$ is added to an evacuated flask containing ${\text{KO}}_{\text{2}}\left(\text{s}\right)$ and equilibrium is established. If the equilibrium partial pressure of ${\text{CO}}_{\text{2}}\left(\text{g}\right)$ is found to be 0.0721 atm, what are the equilibrium partial pressure of ${\text{CO}}_{\text{2}}\left(\text{g}\right)$ is found to be 0.0721 atm, what are the equilibrium partial pressure of ${\text{O}}_{\text{2}}\left(\text{g}\right)$ and the total gas pressure?