The equilibrium constant for, ${\mathrm{H}}_2\left(\mathrm{g}\right)+{\mathrm{CO}}_2\left(\mathrm{g}\right)\rightleftharpoons {\mathrm{H}}_2\mathrm{O}\left(\mathrm{g}\right)+\mathrm{CO}\left(\mathrm{g}\right)$ is 1'80 at 1000°c. If 1.0 mole of H₂ and 1.0 mole of CO₂ are placed in one litre flask, the final equilibrium concentration of CO at 1000°c will be: